Why is it important to add the catalyst to the methanol slowly, swirling to mix between each addition?
a. The methanol may splash out, resulting in loss of starting material and thus loss of product.
b. The palladium may clump and become less effective as a catalyst.
c. The palladium may cause the methanol to spontaneously start on fire if added at all once.
d. The reaction may initiate early if added all at once.