In a class A series fed amplifier using a transistor, under

In a class A series fed amplifier using a transistor, under conditions the maximum ac power delivered is 1 watt.
The maximum transistor dissipation capability should be:

Given P_{o(ac) max} = 1 watt
P_{D (max)} =?

Again 0.5 = η =	P_o(ac)
	P_i(dc)

or 0.5 =	P_o(ac)
	P_D(max) + P_o(ac)

or 0.5 =	1
	P_D(max) + 1

or 0.5 P_{D (max)} + 0.5 = 1
or 0.5 P_{D (max)} = 0.5
or P_{D (max)} = 1
Hence alternative (A) is the correct choice.