Mark the correct alternative in each of the following:
For the multiplication of matrices as a binary operation on the set of all matrices of the form 
, a, b ∈ R the inverse of 
is
For Identity element a * e = a = e * a , with ‘e’ being the identity element.
The identity element of matrix multiplication is the identity matrix.
The identity element e 
Therefore, the inverse element of 
is the inverse of the matrix.
Given: A
A-1
A-1
A-1 = 
Hence, C is the correct answer.
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