In PF find the answer in the First paragraph of "Analysis of Paul's case"
Answer: Individuated
Sit-ups I hear is hard on the back, I don't think people like these now a days.
Leg extensions as apposed to squats for quads I've heard about being bad for knees as well.
The most appropriate answer of this question would be 3 to 4 Ounces
In short, Your Answer is Option B
Hope this helps!
C. Conformation Bias. If you need an explanation, please comment.