Which sentence is not punctuated correctly? a. i carefully proofread my paper, however, after i printed it out, i found a few errors. b. if i could, i'd travel to honolulu, hawaii; key west, florida; and stockholm, sweden. c. hilary, one of our neighbors, had a book signing last night; she ran out of books. d. it would be wonderful if you could stop by this afternoon; we have a surprise for you.