"I am one hundred percent sure," Sam answered coldly, "but thanks anyway."

From the way it is used in the sentence, what is the meaning of the word "coldly"?

(1 point)
Responses

That the temperature is low.
That the temperature is low.

In an unfriendly way.
In an unfriendly way.

After a lot of time has gone by.
After a lot of time has gone by.

With no introduction or preparation.