Use the matrices below to perform matrix multiplication.
B=[[4,7,5],[-9,0,12]],C=[[5,12],[-2,7],[6,8]]
If the operation is undefined, enter NA. Hint: To create a matrix in Mobiva, click on the icon ##: that has tree news of tree dots - ifrs next to the infinity symbol. Specify the appropniate mamber of rows (borizonta) mod colans (vertical).