The Following Sentences Form a Paragraph

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