Directions: In each of the questions below, three sentences are given that may or may not contain an error. Choose the one that is grammatically as well as contextually correct and meaningful. If all the sentences are correct, mark 'All are correct' as your answer.

A) The children were excited about their school trip to the science museum.

B) She not only sings beautifully but also dances gracefully.

C) He is looking forward to meet his cousins after a long time.