After Taking a Particular Illegal Drug, Mark Feels as If

Multiple Choice

After taking a particular illegal drug, Mark feels as if everyone around him is a close friend. "I love you, man!" he tells several complete strangers as he hugs them. But he's getting increasingly dehydrated, and he's ignoring the muscle cramps in his legs. Chances are that Mark has:

A) taken ecstasy
B) taken cocaine
C) "dropped acid" (LSD)
D) sniffed paint thinner or nail polish remover