450. It takes a deft balance between savings discipline, investment knowledge, risk taking, luck, and time to raise a million dollars through investments.
(A) It takes a deft balance between
(B) Deft balancing is needed between
(C) Deftly balanced, it takes
(D) It takes a deft balance of
(E) A deft balance is what one needs among
Can you please explain why the answer is D and not A