Acetic Acid Has a PKa of 4

Multiple Choice

Acetic acid has a pKa of 4.8.How many milliliters of 0.2 M acetic acid and 0.2 M sodium acetate are required to prepare 1 liter of 0.1 M buffer solution having a pH of 4.8?

A) 500 ml acetic acid and 500 ml sodium acetate.
B) 250 ml acetic acid and 250 ml sodium acetate,then 500 ml water.
C) 250 ml acetic acid and 500 ml sodium acetate,then 250 ml water.
D) 500 ml acetic acid and 250 ml sodium acetate,then 250 ml water.