What is the total pressure of this mixture of gases

A mixture of three gases contains .50 mol of gas A, 1.00 mol of gas B, and 1.50 mol of gas C. If the mixture is contained in a 25.0 cylinder at 50 degrees Celsius, what is the total pressure of the mixture?

a. 49.9 kPa
b. 214 kPa
c. 322 kPa

If that 25.0 cylinder is in liters:

PV = nRT

moving variables around P = nRT/V

P = (3 mol)(0.082 atm-L/mol-K)(323) K)/(25.0 L)
P = 3.2 atm
P = 322 kPa

The answer is C.