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f(x) is a twice differentiable function such that `f ' '`(x)`=-f(x)` and `f'(x)=g(x)`. If `h(x)=(f(x))^(2)+(g(x))^(2)` and `h(1)=2`, then `h(2)=`

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A. 0

B

B. 1

C

C. 2

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D. 4

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