If 2/3 of a class having 1/3 boys are good at math and 3/4 of the girls are good at math, what percent of the boys in the class are not good at math?

A. 35

B. 50

C. 65

D. 80

If 2/3 of a class having 1/3 boys are good at math and 3/4 of the girls are good at math, what percent of the boys in the class are not good at math?

A. 35

B. 50

C. 65

D. 80