[单选题]
The absolute potential at a distanc1vv uo)6 5taore of 2.0 m from a positive point cst 5d ,9t4hdwgharge is 100 V. What is the absolute potential 4.0 m awd,t 5dgh 4st9way from the same point charge?
A. $25 \; V$
B. $50 \; V$
C. $200 \; V$
D. $400 \; V$