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Select and write the correct answer from the given alternatives in each of the following: if `alpha` , `beta` be two complex numbers, then `|alpha^2| + |beta^2|` is equal to

A

a) `1 / 2 [ |alpha + beta|^2 - |alpha - beta|^2]`

B

b) `1 / 2 [ |alpha + beta|^2 + |alpha + beta|^2]`

C

c) `1 / 2 [ |alpha + beta|^2 + |alpha - beta|^2]`

D

d) none of these

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