Your best friend is organizing a birthday party for her twins - Amy and Steve - and she put you in charge of ordering the cakes. The bakery offers several types of cakes - a Cheesecake, Sacher Cake, a Chiffon Cake, a Coconut Cake and a Carrot Cake. How many different ways can you order the cakes, assuming that...

a) ... both twins enjoy all the 5 types of cake?

b) ... Steve dislikes Coconuts?

c) ... Amy loves chocolate (Sacher)?

d) ... each cake comes with a generic "Happy Birthday!" wish?

e) ... each cake comes with a personalized "Happy Birthday Steve!" or "Happy Birthday Amy!" sign?