If , then the order of A is

Given,

A x

Let us consider as matrix B, it has an order of 2x2

Let us consider the resultant matrix as C, it has an order of 1x2

For matrix multiplication the columns of 1^st matrix and the rows of 2^nd matrix should be equal.

So, matrix A has got same Columns as Rows of matrix B

The order of new matrix formed after multiplication of matrices will be 1^st matrix row will be taken as new matrix rows. The no. of columns in 2^nd matrix will be taken as new matrix columns

So, matrix A has got same Rows as Rows of matrix C

So, Matrix A will consists of 1x2 order

∴ option (C) is correct answer