\end{array}\right]\) where a, b, c are real positivenumbers, abc = 1 and ATA = I, then the value of a3 + b3 + c3 is
A. 1
B. 2
C. 3
D. 4
Answer:D
\end{array}\right]\) where a, b, c are real positivenumbers, abc = 1 and ATA = I, then the value of a3 + b3 + c3 is
A. 1 B. 2 C. 3 D. 4