Write expressions in propositional calculus to represent the following statements:

a. If you go to Mexico, you will be far away.

b. I cannot hear you when you are far away.

c. When I can’t hear you, I forget what you look like.

d. If I come to Mexico, and I don’t know what you look like, I won’t be able to find you.

e. Therefore, if you go to Mexico, and I follow you, I won’t be able to find you.

Prove whether the conclusion follows from the premises or not.