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If the polynomial x^(6)+px^(5) +qx^(4...

If the polynomial
`x^(6)+px^(5) +qx^(4) -x^(2)-x-3`
is divisible by `(x^(4) -1)`, then the value of `p^(2)+q^(2)` is

A

1

B

9

C

10

D

13

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