I need help with problem 1 I have attached a screen shot the multiple choice question

Question

I need help with problem 1. I have attached a screen shot the muiple choice question

A zds
C 4 yds
C
2 4 t
0
2 4 t 1
0 2 2 1 1 dt
2 t 1
dt
4t 2 1 4 t dt
4
0
2 3 2
2
1 4 t 3 4 0
8 27 1 3 8 8 26
3 Correct option is 4.
Math