# Three stones A, B and C are simultaneously projected from same point with same speed. A is thrown upwards,

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Three stones A, B and C are simultaneously projected from same point with same speed. A is thrown upwards, B is thrown horizontally and C is thrown downwards from a building. When the distance between stone A and C becomes 10 m, then distance between A and B will be

(A) 10 m

(B) 5 m

(C) $5\sqrt2$ m

(D) $10\sqrt2$ m