Consider two subspaces ( V ) and ( W ) of ( ℝⁿ ).
a. Is the intersection ( V ∩ W ) necessarily a subspace of ( ℝⁿ )?
b. Is the union ( V ∪ W ) necessarily a subspace of ( ℝⁿ )?
a. Yes, Yes
b. Yes, No
c. No, Yes
d. No, No