If ‘A’ denotes ‘+’, ‘B’ denotes ‘\times’, ‘C’ denotes ‘-’ and ‘D’ denotes ‘\div’, then what will come in place of ‘?’ in the following equation?
(84 D 14) A 17 C 13 B (75 D 15) A 9 B 7 = ?

A

23

B

17

C

13

D

21