1000 sc 769

[magical cook]

769. The Iroquois were primarily planters, but supplementing their cultivation of maize, squash, and beans with fishing and hunting.
(A) but supplementing
(B) and had supplemented
(C) and even though they supplemented
(D) although they supplemented
(E) but with supplementing


Hi,
apologize for keep posting questions...but I need help agaiN!

The answer is D) but why A) is wrong? it seems A is also gramatically ok...

[buffetfollower]

(A) but supplementing - verb form is wrong and not parallel with first sentence
(B) and had supplemented - usage of 'though' is more appropriate than 'and'. usage of past perfect tense(had supplemented) is not required.
(C) and even though they supplemented - 'and even though' is redundant
(D) although they supplemented - correct
(E) but with supplementing - verb form is wrong and not parallel with first sentence