A rave occurred where a bartender was accused of selling ecstasy. Which of the following is true about the forensic unit involved in further action? 
a) The toxicology unit will test a biological sample from someone who bought and used ecstasy. 
b) The drug unit will test a biological sample from someone who bought and used ecstasy. 
c) The toxicology unit will test a white powder sample taken from the bartender. 
d) The law enforcement unit will test the biological samples from people who are passed out from having used the drug.