The average weight of 19 students is 15kg. by the admission of a new student the average weight is reduced to 14.6 kg. the weight of the new student is ?	Choose the correct choice from the following choices:
A) 10.6 kg B) 10.8 kg C) 7 kg D) 14.9 kg E) none

Rationale: "answer weight of new student = total weight of all 20 students - total weight of initial 19 students = ( 20 x 14.6 - 19 x 15 ) kg = 7 kg . correct option : c"
Answer: C