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If `alphaandbeta` are not the multiple of `(pi)/(2)and [{:(cos^(2)alpha,cosalphasinalpha),(cosalphasinalpha,sin^(2)alpha):}]xx[{:(cos^(2)beta,sinbetacosbeta),(sinbetacosbeta,sin^(2)beta):}]=[{:(0,0),(0,0):}]`then `alpha-beta` is ......

A

any multiple of `pi`

B

odd multiple of `(pi)/(2)`

C

0

D

odd multiple of `pi`

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B
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