A fighter jet plane flying horizontally at an altitude of 2 km at a speed of 200 m/s passes directly above on anti-aircraft gun. The minimum muzzle speed and angle from vertical the gun be fixed to hit the plane is
(A) 200m/s, θ = 45º
(B) 200√2 m/s,θ = 45º
(C) 300m/s, θ = 30º
(D) 300m/s,θ = 60º
