What is the exact title of Three's Company? Is it Three's Company or Three's A Company?

Thanks!

Three's Company

They had two spinoffs called "The Ropers" and "Three's a Crowd"

Thanks for answering my questions Panavadal sorry if I mispelled your name. I also liked hearing your opnions of Three's Company too like when I asked for example what opening themes did you like better and etc. Thanks for the link to the Jack's Blistro site that's what it is right? Thanks for your interest in my questions and thanks to anyone else who replies and I will enjoy seeing your answers to my questions too!