Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: Neolithic age was followed by the age of metals.Reason R: For some time the use of stone implements continued side by side.Read the above statements and select the correct answer from the codes given below:Codes:

• 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 correct explanation of A.
• C. A is true, but R is false.
• D. A is false, but R is true.