Question: Overall receiver noise temperature expression if T1, T2? are amplifier 1, 2, and so on noise Temperature and G1, G2, and so on are their gain respectively is___

Options

A : T = T_1+\frac{T_2}{G_1}+\frac{T_3}{G_1 G_2}+?

B : T = T1+T2 (1-G1)+T3(1-G1G2)+?

C : T = T_1+\frac{T_2}{(1-G_1)}+\frac{T_3}{(1-G_1 G_2)}+?

D : T = T1+T2 (G1)+T3(G1G2)+?

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