Most Studies Show That Sex Offenders Have Lower Reoffense Rates

Most studies show that sex offenders have lower reoffense rates than other types of criminals. Even though this finding may reflect the true differences in recidivism, there are other factors that contribute to the lower reoffense rates found among sex offenders. Which of the following is NOT among such factors?

A) Many sexual offenses go unreported.
B) Self-reports might underestimate the incidence of sex crimes.
C) When sex offenders recidivate, they only commit sexual offenses.
D) Follow-up time periods for calculating reoffense rates are relatively short.