A cylinder has a well-fitted 2.0 kg metal piston whose cross-sectional area is 2.0 cm². The cylinder contains water and steam at constant temperature. The piston is observed to be at rest. What is the pressure (in Pa) inside the cylinder?
a) 10⁵ Pa
b) 2.0 Pa
c) 20⁵ Pa
d) 10⁶ Pa