If $$\cos (A + B) = 0$$ and $$\sin (A - B) = 0$$, then what is the value of angle A and angle B? (0 degree < A, B  $$\leq$$ 90 degree).

A

20 degree, 70 degree

B

45 degree, 45 degree

C

15 degree, 75 degree

D

60 degree, 30 degree