Which version best uses a variety of sentence structures to enhance the flow and writing style of a story?

A. The other actor came out of the audition room. I knew I would be
next. I took a deep breath. Finally, the casting director called my
name. I stood up.

B. As soon as the other actor came out of the audition room, I knew I
would be next. I took a deep breath. Finally, the casting director
called my name, and I stood up.

C. The other actor came out of the audition room, and I knew I would
be next. I took a deep breath, and finally the casting director called
my name, and I stood up.

D. As soon as the other actor came out of the audition room, I knew I
would be next. Before the casting director finally called my name
and I stood up, I took a deep breath.