E1F11

Which of the following best describes one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC certification?

1. AIt must produce full legal output when driven by not more than 5 watts of mean RF input power
2. BIt must have received an Underwriters Laboratory certification for electrical safety as well as having met IEEE standard 14.101(B)
3. CIt must exhibit a gain of less than 23 dB when driven by 10 watts or less
4. DIt must satisfy the FCC's spurious emission standards when operated at the lesser of 1500 watts or its full output power

Pick an answer to check it.