[单选题]
Consider a uniform electripxl ./ 9xghp8ic fiefj) - pwjhj s9j259iseld of 50 N/C directed toward the east. If the voltage measu9jfwj-je hsi s2)5jp9red relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of that point?
A. $30 \; V$
B. $50 \; V$
C. $80 \; V$
D. $130 \; V$
