Question

..

Answer 1

I am!!

Answer 2

I am

Answer 3

Sirve la comida.

To Serve: Servir, and IR verb, you use these steps when making it a command:

Start with the yo form of the present indicative.
Then drop the -o ending.
Add the ending.

The endings are:
-ar verbs:
-e (for Usted.), -en (for Ustedes(plural))

-er and -ir verbs:
-a (for usted), -an (for Ustedes (plural))

Answer 4

I meant sirva* la comida, sorry about that.

Answer 5

if it was B, then sirvir would have to be an AR verb, which it isnt. I often use this website when I'm having trouble with spanish, it explains it pretty well, since with usted commands, it can get confusing because the ending is switched.

http://www.studyspanish.com/lessons/formcomm.htm