The vector of length 9 and in the same direction as v = ⟨3,−4,−3⟩ is:

a) ⟨9, -12, -9⟩
b) ⟨3, 4, 3⟩
c) ⟨27, -36, -27⟩
d) ⟨6, -8, -6⟩