16. A function returns std::vector＜T＞ foo();. At call-site you write:

Why might the extra std::move() be worse than writing v = foo();?
(A) Disables copy elision
(B) Prevents RVO
(C) Converts to Ivalue reference
(D) Increases alignment padding
(E) None of the above

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統計： A(0), B(0), C(0), D(1), E(1) #3830627