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If A=[{:(1,-1),(2,3):}] and B=[{:(2,3),(...

If `A=[{:(1,-1),(2,3):}] and B=[{:(2,3),(-1,-2):}]` then which of the following is/are correct ?
1. `AB (A^(-1)B^(-1))` is a unit matrix.
2. `(AB)^(-1)=A^(-1)B^(-1)`
Select the correct answer using the codes given below :

A

Only I

B

Only II

C

Both 1 and 2

D

Neither 1 nor 2

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