273. A 15 in. diameter fan operates at 1600 rpm and develops a head of 6 in. of water and

delivers 120 cfm. What volumetric capacity for geometrically similar fan will develop 6 in of

water at 1300 rpm?

A. 147.7 cfm B. 181.8 cfm

C. 97.5 cfm D. 79.2cfm