Evaluations for input

The jet engine in Fig. P3.50 admits air at 20°C and 1 atm at (1), where A_1 = 0.5 m^2 and V_1 = 250 m/s. The fuel-air ratio is 1:30. The air leaves section (2) at 1 atm, V_2 = 900 m/s, and A_2 = 0.4 m^2. Compute the test stand support reaction R_x needed. <image 1>

(A) 99,000 N

(B) 102,000 N

(C) 121,000 N

Answer with the option's letter from the given choices directly. No punctuation.