What is the key difference between a fuel-air ratio control and a fuel flow control in turbine engines?

• A. Fuel-air ratio control maintains the target fuel-to-air mix for efficient combustion.
• B. Fuel flow control sets a specific amount of fuel to reach a desired speed or ITT.
• C. Fuel-air ratio control adjusts only the air mass.
• D. Fuel flow control adjusts exhaust temperature directly.

Answer: (B)