If Tr (A) denotes the trace of the matri...

If `T_r (A)` denotes the trace of the matrix A, then which of the following cannot hold?

A

`T_r (kA) = kT_r (A)` (`k` is a scalar)

B

`T_r(A+B) = Tr(A)+Tr(B)`

C

`T_r(I_3) = 3`

D

`T_r(A^2) = (T_r(A))^2`

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