Mathematics

Problem

If the centroid of triangle whose vertices are

(a, 1, 3)

(-2, b, -5)

and

(4, 7, c)

be the origin, then the values of

a, b, c

are (a)

-2, -8, -2

(b)

2, 8, -2

(c)

-2, -8, 2

(d)

7, -1, 0