A client is seen in the 24-hour drug clinic. She's thin, tense, jittery, and has dilated pupils and ...

A client is seen in the 24-hour drug clinic. She's thin, tense, jittery, and has dilated pupils and bad
  breath. She tells the nurse I have been speeding, and now I am burning up and need help..
 
  She
  permits an oral temperature to be taken (it is 104 F), but then becomes suspicious and moves away
  from staff, refusing to allow further examination. She states, You could be trying to kill me.. The
  assessment that can be made is the client is most likely under the influence of
  a. PCP.
  b. heroin.
  c. barbiturates.
  d. amphetamines.