The Following Sentences Form a Paragraph

Multiple Choice

The following sentences form a paragraph. Proofread them for inconsistent person and faulty parallelism. Identify the type of each error in each sentence, or select "correct" if the sentence is free of errors.
-Before 1930, however, you could not have found them on your grocer's shelf. One could not have had the pleasure of biting into a cookie and find hard chips of chocolate.

A) correct
B) inconsistent person
C) faulty parallelism