For vectors u1 = (1, 1, 1)T, u2 = (1, 2, 2)T, and u3 = (2, 3, 4)T, what's the transition matrix from the basis {e1, e2, e3} to {u1, u2, u3}?
a) Depends on the order of vectors
b) Identity matrix
c) Non-singular matrix
d) Singular matrix