Statement: Every year, at begining or at the end of the monsoons, we have some cases of conjunctivities, but this year it seems to be major epidemic witnessed after nearly four years.
Courses of action: I. Precautionary measures should be taken after every four years to check this epidemic .
II. People should be advised to drink boiled water during winter season.

Options

A. if only I follows,
B. if only II follows,
C. if either I or II follows,
D. if neither I nor II follows,

Answer

B

Explanation

Against an epidemic, precautionary measures should be taken every year and not every four years. Hence, I does not follow. But II is, of course, a positive step. It is a preventive action and it should be followed. Hence, I does not follow while II does.