Which statement about unducted fan engines is explicitly supported by the material?

Which statement about unducted fan engines is explicitly supported by the material?

• A. They are expected to be two to three times the size of current turboprop engines.
• B. They will not reach Mach 0.8.
• C. Their diameter will be between 8 and 11 feet.
• D. They use only aluminum blades.

Answer: (A)