R-134a flows through a diffuser. The inlet velocity is 112 m/s, with a pressure of 800 kPa and a temperature of 70°C. If the mass flow rate needs to be 1.42 kg/s, what is the area of the diffuser inlet (in cm²)?

a) 10 cm²
b) 20 cm²
c) 30 cm²
d) 40 cm²