Ali and Ani had a vacation. They went to Prapat. They wanted to visit Hadi's family. Mr. Anwar, Ali's and Ani's father, went together with them. They went there

Ali and Ani had a vacation. They went to Prapat. They wanted to visit Hadi's family. Mr. Anwar, Ali's and Ani's father, went together with them. They went there by bus. They left Medan at six o'clock in the morning and arrived in Prapat at nine. Hadi and Tati were waiting fot them at the bus
1. What does the word "them" in the last sentence refer to?
A. Ali and Ani
B. Ali, Ani, Their father, and Mr. Anwar
C. Ali, Ani, and Hadi' family
D. Ali, Ani, and their father.