Critical Reasoning

The paintings of French painter Trianne Dejere sold best in the period following the production of La Triump now Dejere's most famous piece. In the 12-month period preceding the unveiling of this piece, Dejere sold 57% of the works she produced in this period, a far greater percentage than in previous years. In the 12-month period following a glowing review of La Triumph in a popular magazine, however, Dejere sold 85% of the paintings she produced. Interestingly, Dejere's revenue from painting sales was roughly the same in both periods, since she sold the same number of paintings in the 12 months before presenting La Triumph as she did in the 12 months following the favorable review.
Which of the following statements can be properly concluded from the passage, if the information above is true?

(A) Due to the positive review, Dejere was able to charge substantially more for the works produced after La Triumph than the works produced before it.

(B) Dejere was more concerned with positive reviews than with increasing the prices of her paintings.

(C) The positive review of La Triumph brought Dejere's work to the attention of more art collectors than were previously aware of her work.

(D) Dejere painted fewer works in the 12-month period following the review of La Triumph than she had in the 12-month period preceding its unveiling.

(E) Dejere paid more attention to marketing her paintings after La Triumph received such a positive reception

OA [spoiler](D)[/spoiler]

A- "substantially" makes this answer choice incorrect. While we can conclude that she was able to charge more, we can't assume that she charged "substantially" more

B- This is just ridiculous. Out of scope

C- The passage doesn't support this. This type of answer is thrown in to trick you. It sounds perfectly reasonable, but being reasonable isn't enough on the gmat, it has to be supported by the passage

D- correct

E- This isn't supported by the passage.

I'm going with D. No confidence on my answer. Can anyone tell OA?