Among a group of 5 students, in a test of 100 marks with 40 being the passing marks, E scored the highest marks of 90, B scored 10 marks more than C and 20 more than D, D scored 50. Biggest difference in marks of two student is 50. Nobody failed in the test. How much did C scored?
1
70
2
40
3
60
4
None of these