Critical Reasoning

Distance learning offers a potentially lucrative option for learning institutions. Money that would otherwise be spent on classroom space, parking facilities, climate control, and other particulars associated with providing a location-specific service can be diverted to marketing and quality control two crucial factors that can drive new business.

Which of the following can be correctly inferred from the statements above?

A. The costs associated with offering distance learning are lower than those of other instruction methods.
B. Online classes are more convenient for both instructors and students than are classes held at specific geographic locations.
C. Distance learning does not required climate control or parking facilities.
D. Most types of instruction can be effectively conducted in an online setting.
E. Computers and internet access are uniformly available to people in the developed world.

OA : A
Source : IDK

I narrowed down to options A and C. I don't understand why A is right and C is wrong. My reasoning is as follows: Option A states that "The costs associated with offering distance learning are lower than those of other instruction methods". There's no reference in the premise about the " other instruction methods". It just says that Distance Learning saves money. But how are we comparing it with the " other methods" ? Maybe, part-time students are so less that the institution saves even more than DL as they have to pay for less profs and stuff like that..

And in contrary, why is C wrong ? The premise states that because of DL one doesn't need to spend money on Climate Control and Parking facilities. So, doesn't this means that DL doesn't require Climate Control and Parking facilities ? To be honest, I think C is also not the best answer but relatively good.
Please clarify these doubts.

Thank You