Does a valid proposition have a conjunctive normal form?

Question

My homework exercise says to put the boolean expression in conjunctive normal form, however while doing some work I found out it's a valid proposition as it is always true. Checked myself with the truth table. Does this mean it doesn't have a CNF and I just need to write it's true or there is something else I have to write. the proposition is given with A,B,C statements

Answer 1

You can still write in the CNF before it collapses to true:

 will probably look like : (A v ~A) ^ (~B v B) ^ (~C v C)