i have a question about matlab. please give me the correct answer.

For loops in Matlab Consider this loop, which produces a vector v2 from the elements of a vector v1 v1 contains positive integers and its length is even (a multiple of 2) mod(a,b) is the remainder when a is divided by b. n-length (v1); for idx-1:n if mod (idx, 2)e v2(idx-1)v1(idx); else v2 (idx+1) v1(idx); = end end Which of the following most accurately describes what is stored in v2 after the loop Please select the correct answer from the list below: The elements of v1 in odd positions followed by the elements of v1 in even positions OThe elements of v1 in even positions followed by the elements of v1 in odd positions O The second half of v1 followed by the first half of v1 O The elements of v1 rotated one place to the right (so the last element of v1 becomes the first of v2) O The elements of v1 rotated one place to the left (so the first element of v1 becomes the last of v2) O v2 (idx) is the number of even values in the subarray v1 (1 idx) O v2(idx) is the number of odd values in the subarray v1 (1:idx) O The elements of v1 with each pair of adjacent values exchanged O The elements of v1 with their positions reversed