Does television viewing affect the performance of students?
I. The number of failures in Class XII is more this year.
II. Television watching is harmful to the eyes.

A

if the data in statement I alone are sufficient to answer the question;

B

if the data either in I or II alone are sufficient to answer the question;

C

if the data even in both the statement together are not sufficient to answer the question;

D

if the data in both the statements I and II are needed to answer the question.