The line chart given below shows the masks obtained by two students P and Q in 6 subjects.

Which of the following statement is correct?

I. The average of marks obtained by P in S1 and S2 is 70.
II. The ratio of marks obtained by Q in S3 to the marks obtained in S4 are 13 : 7.

A

Only II

B

Both I and II

C

Only I

D

Neither I nor IT