Stand up to (someone)

Do you know the English expression “to stand up to (someone)“? Read the conversation below. Can you guess the meaning?

Dean: Ian tried to blame me for the mistake at work, but I stood up to him.

Sarah: Good! What did you say?

Dean: I told him it wasn’t me who made the mistake and if he tried to blame me again I would report him to the boss.

Does it mean:

a) defend yourself against someone

b) stand up in front of someone

c) get angry with someone

d) hit someone

The answer is below! ↓

 

Answer: a) defend yourself against someone