When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its?

When 0.01 moles of NaOH are added to a buffer solution, its PH changes

1.	When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its?
A.	0.115
B.	0.900
C.	0.015
D.	0.215
Answer» B. 0.900