A lead ball is located in situation A at 1m height in a gas column with air air = 1.2 kg / m, dynamic

A lead ball is located in situation A at 1m height in a gas column with air ρ air = 1.2 kg / m³, dynamic viscosity air = 18 x 10 -6 (Ns) / m² and in situation B at 1m height in a gas column with hydrogen that Is 14 times lighter and has a dynamic viscosity equal to 12 x 10 -6 (Ns) / m².

Which statement is correct?
a) Potential energy A> potential energy B
b) Potential energy A <potential energy B
c) Potential energy A = potential energy B