Simplify the following expressions :

A) a b c d e + a c d + a c f g h + a b c d e + a c d e + eh ( to a minimum number of literals (variables) and terms using boolean algebra theorems ) .

B) A B + ACD + ABD + ABC D ( to two terms using boolean algebra theorems ).

C) C D + A B + A C + A C + A B + C D ( to a minimum number of terms, and at the same time, the simplified expression shall be expressed in POS format. Use boolean algebra theorems ).

PLEASE : State which theorem(s) you have used for each step in your work.