For any four vectors veca, vecb, vecc, v...

For any four vectors `veca, vecb, vecc, vecd` the expressions `(vecb xx vecc).(veca xx vecd) +(vecc xx veca).(vecb xx vecd)+(veca xx vecb).(vecc xx vecd)`is always equal to:

A

`[veca vecb vecc]`

B

`[veca vecc vecd]`

C

`[vecb vecc vecd]`

D

None

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The correct Answer is:

D

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