While doing a project work on weights of students in the class-room Sekhar found mean of the class as 28 kg, median as 29.5 kg and mode as 27 kg. While doing his project two students Eswar & Nawaz were absent in the class. If those two were attended mean, median and mode will not change. Then the possible weights of these two students are (in kgs)

A) 27, 29

B) 28, 28

C) 27.5, 28.5

D) 20, 36