$10.$ There is sudden increase in the diameter of a pipe from D$1$ to D$2.$ If the minor loss is independent of the direction of flow, what would be the value of D$1/$D$2$ assuming KL $=0\mathrm{.}62\text{'}$ A$.0\mathrm{.}644$ B$.4\mathrm{.}66$ C$.0\mathrm{.}646$ D$.0\mathrm{.}466$