The following statements refer to axial flow compressors as compared to centrifugal compressors:
1. Can be designed for higher pressure ratios than centrifugal compressors
2. Maximum efficiency higher than centrifugal compressors but in a narrow speed range
3. More suitable for aviation gas turbines due to lower frontal area
4. Lighter in mass than centrifugal compressors
Which of the above statements are correct?
(A) 1 and 3 only (B) 2 and 3 only
(C) 1, 2 and 3 only (D) 1, 2, 3 and 4