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If 0 le x le pi//2, then which one of th...

If `0 le x le pi//2`, then which one of the following is always correct?

A

`sin^2 x lt 1//2 and cos^2 x gt 1//2`

B

`sin^2 x lt 1//2 and cos^2 x lt 1//2`

C

`sin^2 x lt 1//2 and cos^2 x lt 1//2`

D

At least one of `sin^2 x, cos^2 x` is less than 1

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