What is the dimension of the subspace W=span{⟨1,2,0⟩,⟨2,4,0⟩}W = \text{span}\{\langle 1, 2, 0 \rangle, \langle 2, 4, 0 \rangle\}W=span{⟨1,2,0⟩,⟨2,4,0⟩}?
000
111
222
333