Read the text below and answer the questions!

Rayhan and Veronica are students of a boarding school. They start their activity early at 6 o’clock in the morning. At 6 o’clock, they do exercise and stretching with their friends and teacher. They always do exercise to keep their bodies healthy. The school begins at 7.30 am. Before they go to school, they take a bath, get dressed, and have breakfast. They must hurry because their mentors will punish them if they come late. All the students in the school have breakfast together. They study at first period class from 7.30 am until 12.00. After first period class, Rayhan and Veronica have lunch together with their friends. The second period starts at 13.00 and finishes at 14.00. After school, the students join extracurricular activities. Rayhan joins Karate class, and Veronica goes to music class. They are so busy, but they are happy to do all the activities in the boarding school.

They study at first period class from 7.30 am until 12.00.

The word “they” in the sentence above refers to ….