Which of the following sentences is written correctly? a. If people are learning how to skate for the first time and don't have skates, they can rent a pair. b. If a person learning how to skate for the first time doesn't have skates they can rent a pair. c. If a person fearning how to skate for the first time doesn't have sizates, they can rent a pair. d. If people are learning how to skate for the first time and don't have skates they can rent a pair.