E5A02 - Amateur Extra Class

E5A02 : What is the resonant frequency of an RLC circuit if R is 22 ohms, L is 50 microhenries, and C is 40 picofarads?
A 44.72 MHz
B 22.36 MHz
C 3.56 MHz
D 1.78 MHz
Correct Answer: 3.56 MHz