Combine the following to make a complex sentence: "The man was sleeping." "A cat is purring." "Ryer was sitting down."
a) While the man was sleeping, a cat was purring, and Ryer was sitting down.
b) The man was sleeping, a cat is purring, and Ryer was sitting down.
c) The man, sleeping, a cat purring, and Ryer sitting down.
d) Sleeping, the man, a purring cat, and sitting down, Ryer.