Five students Aru, Beenu, Chitra, Diraj and Eshu are standing in a line. Aru is ahead of Chitra and Eshu. Beenu is exactly between Diraj and Aru. Chitra is exactly between Aru and Eshu. Aru is exactly between Diraj and Eshu. Aru is in the middle of the line. Who is the first in line? (line starts from the top.)