2s + 5t 4s Let W be the set of all vectors of the form Show that W is a subspace of R* by finding vectors u and v such that W = Span{u, v}. 5s - 2t 4t . . ... Write the vectors in W as column vectors. 2s + 5t 4s = S + t = su + tv 5s - 2t 4t What does this imply about W? OA. W= u+v O B. W = Span{u,v} O C. W=s+t O D. W = Span{s,t} Explain how this result shows that W is a subspace of R*. Choose the correct answer below. O A. Since u and v are in R" and W = u + v, W is a subspace of R. O B. Since s and t are in R and W = u + v, W is a subspace of R4 O C. Since s and t are in R and W = Spanfu, v}, W is a subspace of R. O D. Since u and v are in R* and W = Spanfu,v}, W is a subspace of R