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1. |
Let A, B, C, D be (not necessarily square) real matrices such that \[{{A}^{T}}=BCD;\text{ }{{B}^{T}}=CDA;\] \[{{C}^{T}}=DAB\] and \[{{D}^{T}}=ABC\] for the matrix \[S=ABCD,{{S}^{3}}=\] |
A. | I |
B. | \[{{S}^{2}}\] |
C. | S |
D. | O |
Answer» D. O | |