\fThe angle between the vectors V2 - 1, V2 + 1, V2 and [1, 1, 1] is: 0 60 O 90 30 O 450Let u = [-1, 2, 2] and U = [1, -1, 1] Find u U' [3, 4, -1] O [-1, 3, 4] O [4, 3, -1] O [3, 4, 1]