A Balloon Is Released from a Tall Building

A balloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg. Its volume is 5.0 m³. The density of air is 1.3 kg/m³.
-What is the magnitude of the initial acceleration of the balloon?

A) zero m/s²
B) 9.8 m/s²
C) 10.9 m/s²
D) 22.1 m/s²
E) 43.6 m/s²