The following questions refer to this figure of a simple metabolic pathway:

-A mutation results in a defective enzyme A.Which of the following would be a consequence of that mutation?

A)an accumulation of A and no production of B and C
B)an accumulation of A and B and no production of C
C)an accumulation of B and no production of A and C
D)an accumulation of B and C and no production of A
E)an accumulation of C and no production of A and B