DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?assertion A? and the other labelled as "reason R ". You are to examine these two statements carefully and decide if the assertion A and reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion: In International system of units the unit of length is centimetre. Reason: If a centimetre where divided into ten equal parts then each part is equal to a millimetre.

• A. Both A and R are true and R is the correct explanation of A.
• B. Both A and R are true but R is not the correct explanation of A.
• C. A is true but R is false.
• D. A is false but R is true.