(1 1 1 Let A = (2 3 2 and B = A-1 - 2 2 3 (b11 b12 b13 = ( b21 b22 b23 b31 b32 b33) What is the value of b11 + b22 + b33? a) 8 b) 7 c) 4 d) 0 e) B does not exist because A is non-invertible.

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