How to be a consultant, Part 1 (of many)

So you're a consultant, and you're on a conference call with your client and about 30 other people. Do you:
a) Put your cell phone next to the speaker phone (ever wonder what the beeping sound is?)
b) talk to your neighbor about sports during the conference call (know what full duplex is?)
c) mute your phone

The correct answer is C - mute your g*d d*mn phone moron. If this is a difficult choice, you must charge much higher rates than me.