What is the function of sodium methoxide in the following reaction? This question is in regards to a Wittig reaction.
A) It acts as a base to form the deprotonated Wittig salt.
B) It is used in the work-up step to neutralize and isolate the organic product.
C) It acts as a solvent to dissolve the reagents.
D) It acts as a nucleophile to form the deprotonated Wittig salt.
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