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_____

• 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)+⋯