Which of the Following Would Provide the Best Synthesis of 3-Ethyl-6-Methyl-2-Heptanone

Multiple Choice

Which of the following would provide the best synthesis of 3-ethyl-6-methyl-2-heptanone?

A) Ethyl acetoacetate + NaOC₂H₅ + CH₃CH₂I; then KO-t-Bu + (CH₃) ₃CCH₂CH₂Br; then NaOH; then H₃O⁺; then heat
B) Ethyl acetoacetate + NaOC₂H₅ + (CH₃) ₃CCH₂Br; then KO-t-Bu + CH₃CH₂I; then NaOH; then H₃O⁺; then heat
C) Ethyl acetoacetate + NaOC₂H₅ + (CH₃) ₂CHCH₂CH₂Br; then KO-t-Bu + CH₃CH₂I; then NaOH; then H₃O⁺; then heat
D) Ethyl acetoacetate + NaOC₂H₅ + (CH₃) ₂CHCH₂CH₂CHBrCH₂CH₃; then NaOH; then H₃O⁺; then heat
E) Ethyl acetoacetate + NaOC₂H₅ + CH₃CH₂I; then KO-t-Bu + (CH₃) ₂CHCH₂Br; then NaOH; then H₃O⁺; then heat