The velocity of gas leaving the nozzle is

Question

A gas is following through an insulated nozzle. If the inlet velocity of gas is negligible and there is an enthalpy drop of 45 kJ/kg, the velocity of gas leaving the nozzle is                             

(A) 100 m/s                 (B) 200 m/s

(C) 300 m/s                 (D) 350 m/s