**Question :** A body is thrown vertically up with a velocity 𝑢. It passes three points 𝐴, 𝐵 and 𝐶 in its upward journey with velocities 𝑢2 , 𝑢 3 and 𝑢 4 respectively. The ratio of the separations between points 𝐴 and 𝐵 between 𝐵 and 𝐶, 𝑖𝑒, 𝐴𝐵/𝐵𝐶 is

(A) 1

(B) 2

(C) 10/7

(D) 20/7

**Answer :** option (D)

**Solution :**