Please solve this problem for me

3. Consider the region of electric field, as shown in the figure. Work done by the electric field, in carrying a proton from point B to point A, will be

(1) 1.6 x 10–18 J
(2) –1.6 x 10–18 J
(3) 1.6 × 10–19 J
(4) –1.6 × 10–19 J

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