While at a Friend's House, You Are Asked to Install

Multiple Choice

While at a friend's house, you are asked to install a new DIMM into a system. Although you've done this procedure countless time, you are concerned about ESD prevention. Which of the following could be done to mitigate the possibility of ESD in this case?

A) Lay the system and any components on aluminum foil while performing the upgrade.
B) Frequently touch or keep a hand on the computer chassis throughout the upgrade.
C) Leave the system plugged-in to the wall to provide it with grounding from the houses wiring.
D) There is no way to prevent ESD in this case.