13. There is an electric potential V(x,y,z)=7xy² in volt, and a +0.2 C charged particle moves from 2î+9ĵ+6k̂ to 5î-2ĵ+7k̂. What's the work done by the electric field?
(A) -1216 J
(B) 1216 J
(C) -198.8 J
(D) 198.8 J
(E) None

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