27. Let S and Tbe two subspaces of such that dim(5) = 19 and dim(T) = 17.7hen, the (a) smallest possible value of dim(SnT) is 2 (b) largest possible value of dim (SnT) is 18 c) smallest possible value of dim(S+T) is 19 (d) largest possible value of dim(S+T) is 22