A stone of mass 1 kg tied to a light inextensible 10 string of length, L = \[\frac{10}{3}\]m is whirling in a circular 0 path of radius L in a vertical plane. If the ratio of the maximum tension in the string to the minimum is 4 and if g is taken to be 10\[\text{m}/{{\text{s}}^{\text{2}}}\], then speed of stone at the highest point of the circle is

• A. 20 m / s
• B. \[10\sqrt{3}m/s\]
• C. \[50\sqrt{2}m/s\]
• D. 10 m / s