Which of the following is true about the dimension of a subspace W⊆RnW \subseteq \mathbb{R}^nW⊆Rn?
dim(W)\dim(W)dim(W) can be negative
dim(W)=n\dim(W) = ndim(W)=n always
0≤dim(W)≤n0 \leq \dim(W) \leq n0≤dim(W)≤n
dim(W)>n\dim(W) > ndim(W)>n