If sintheta=frac(8)(17), then sectheta, ...

If `sintheta=frac(8)(17)`, then `sectheta`, is equal to
(A) `frac(15)(17)` (B) `frac(17)(15)` (C) `frac(18)(15)` (D) `frac(15)(18)`

A

C

B

D

C

A

D

B

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