Problem 1 Define the matrix A = [1:4 5:8 ones (Int64,4)]. Predict the result of performing the following operations in Julia (before checking your answers by running them). Note that the lines are meant to be run one-by-one in the same workspace, so when you e.g. change an array this will affect the subsequent statements. a. X = A[3,:) b. B = A[2:2, 1:3) C. A[1,1] = 9+ A[2,3] d. A[1:3, 2:3] = [0 0; 0 0; 0 0] e. A[1:2, 2:3] = [1 3; 1 3] f. y = A[1:4, 3] g. A = [A [2 1 7; 7 4 5; ones (Int64,2,3)]] h. C = A[[1,3),2] i. D = A[[1,2,4],[1,3,4]]