(A) PH of water increases with increases in temperature.

In the following questions, two statements are given; one in assertion (A) column while the other in reason (R ) column. Examine the statements carefully and mark the correct answer according to the instructions given below: 

If both (A) and (R) are correct and (R) is the correct explanation of (A) 

If both (A) and (R) are correct but (R) is not the correct explanation of (A)

If (A) is correct but (R) is wrong

If (A) is wrong but (R) is correct

(A) PH of water increases with increases in temperature.

(R) K_w of water increase with increase with increase in temperature