politeness - Responding to "It was nice to talk to you"

How can I reply to "It was nice to talk to you" properly both formally and casually?

Actually, I want to make this question a bit general, but since I heard this sentence a lot I used it as an example.

What about these options I wrote off the top of my head?

a. the same (for me it sounds too short and informal, but it can be used when texting?)

b. I think so

c. me too

d. It was nice to talk to you too

e. I feel the same

f. ______________________

Answer

There could be many ways and it depends on the speaker. However, I always reply this way

Thank you. Same here. Or
Thank you. Nice talking to you as well

This conveys that your are thankful to the person. And you too feel the same.