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If W1, W2 and W3 represent the work done in moving a particle from A to B along three different paths 1, 2 and 3 respectively (as shown) in the gravitational field of a point mass m, find the correct relation between W1, W2 and W3 

(1) W1 > W2 > W3

(2) W1 = W2 = W3

(3) W1 < W2 < W3

(4) W2 > W1 > W3