A certain transmitter radiates 9 kW with the carrier unmodulated, and 10.125 kW when the carrier is sinusoidally modulated. If another sine wave, corresponding to 40% modulation, is transmitted simultaneously, the total radiated power is
(1) 7.3 kW
(2) 10.84 kW
(3) 1 kW
(4) 9 kW