উৎপাদকে বিশ্লেষণ করঃ 8a3-1
A
(2a-1)(2a-1)(2a-1)
B
(2a-1) (4a2-1+1)
C
(2a-1) (4a2+2a+1)
D
(2a+1) (4a2-2a+1)
Correct Answer: (2a-1) (4a2+2a+1)