Exhibit 20-2 Consider the Data Below to Answer the Following Question(s)

Multiple Choice

Exhibit 20-2
Consider the data below to answer the following question(s) .
When CO₂ is bubbled through an ether solution of benzylmagnesium bromide,and the resulting mixture is acidified,phenylacetic acid is produced.Any unreacted benzylmagnesium bromide is converted to toluene in the acidification step.
-Refer to Exhibit 20-2.This reaction is described as a _____ process.

A) carbonylation
B) carboxylation
C) carbaniolation
D) cationation