Is Option B the Correct Answer for Question 8 on Viscosity?

[The Dude 321]

The question is attatched. The question is number 8.

I simply do not understand, if the question is right at all, because I believe that options A and D are both correct. But, B it seems is the answer. High temp means low visc. and vice versa, leading to A and D being correct.

Please explain why B is correct

 

[Stonebridge]

Low viscosity means higher terminal velocity. (Less resistance)
High viscosity means lower terminal velocity.
Only one option can be right.