If f(x) = ax^(7)+bx^(3)+cx-5, a, b, c ar...

If `f(x) = ax^(7)+bx^(3)+cx-5, a, b, `c are real constants, and f(-7)=7, then the range of f (7) + 17 cos x is a)[-34,0] b)[0,34] c)[-34,34] d)None of these

A

[-34,0]

B

[0,34]

C

[-34,34]

D

None of these

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The correct Answer is:

A

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