Smell a rat

Do you know the English expression “to smell a rat”? Read the conversation below. Can you guess the meaning?

Eddie: I just had a strange phone call. The man said he was calling from my bank and he asked me for my personal information.

Steve: Did you give it to him?

Eddie: No. I smelled a rat when he asked me for my account number and PIN.

Does it mean:

a) smell a rat

b) get angry

c) sense that something is suspicious

d) think something is amusing

The answer is below! ↓

 

Answer: c) sense that something is suspicious