SECTION A CONVERSATIONS In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow. Questions 1 to 4 are based on the following conversation. At the end of the conversation, you will by give 20 seconds to answer the questions.
Now listen to the conversation. When do the swallows return to San Juan Capistrano
A．In March. B．In early summer. C．In October. D．In April.