E5C06 - Amateur Extra Class

E5C06 : What does the impedance 50 - j25 ohms represent?
A 50 ohms resistance in series with 25 ohms inductive reactance
B 50 ohms resistance in series with 25 ohms capacitive reactance
C 25 ohms resistance in series with 50 ohms inductive reactance
D 25 ohms resistance in series with 50 ohms capacitive reactance
Correct Answer: 50 ohms resistance in series with 25 ohms capacitive reactance