Which of the Following Would Be the Preferred Reagents Used

Which of the following would be the preferred reagents used in the following synthesis?

A) 1. NaBH₃-THF
2) H₃O⁺
B) 1. Mg/ether
2) dry CO₂
3) H₃O⁺
C) 1. LiAlH₄-THF
2) H₃O⁺
D) 1. Hot KMnO4
2) H₃O⁺
E) 1. LiAlH[O(CH₃) ₃]₃-THF
2) H₃O⁺