The following table gives the percentage of marks obtained by seven students in six different subjects in an examination.
The number in the brackets gives the maximum marks in each subject.

If a student secures 80% or more in a subject, the student is considered to have received a distinction in the subject. Who among the students below received a distinction in exactly one of the six subjects?

Correct option is C

Math’s = 80% of 150 = 120 (nobody gain 120 marks)
Chemistry = 80% of 130 = 104 (nobody)
Physics = 80% of 120 = 96 (nobody)
Geography = 80% of 100 = 80 (Muskan and Tanvi)
History = 80% of 60 = 48 (All except Tanvi)
Computer = 80% of 40 = 32 (All)
In the given options Tanvi is correct.