What is the potential at point \(\mathrm{c}\) ?

A. \(-400 \mathrm{~V}\)

B. \(-350 \mathrm{~V}\)

C. \(-100 \mathrm{~V}\)

D. \(350 \mathrm{~V}\)

E. \(400 \mathrm{~V}\)

Refer to Figure Q21.24, which shows equipotential lines in a region of space. The equipotential lines are spaced by the same difference in potential, and several of the potentials are given.

y (m) 1.0- 0.5 0- -200 V OV 100 V b -0.5- 300 V- -1.0+ -1.0 -0.5 -x (m) 0.5 1.0 FIGURE Q21.24