According to the Ethical Standards Specifically Applicable to Forensic Psychology

According to the ethical standards specifically applicable to forensic psychology (e.g.,Blau,1998) ,

A) the psychologist should accept a fee contingent upon the outcome of a case only if the case is criminal (rather than civil) .
B) the psychologist should receive all fees after testifying.
C) the psychologist who regularly testifies as an expert witness should devote some professional time to "pro bono publico" (charity) cases.
D) all of the above