Identify the sentence that contains a grammatical error. Pay close attention to subject-verb agreement and the use of plural nouns.
1. The team of researchers are presenting their findings tomorrow.
2. The group of friends enjoys going to the beach together.
3. Each of the cars were parked in a line.
4. All of the cupcakes has been eaten by the end of the party.
5. Neither the cat nor the dog was interested in the new toy.