Just an afterthought to my post above:
The end result will be decreased TAS, CAS and Mach, and (at speeds above 'green dot') increased specific range (NM/kg of fuel). For speeds above 'green dot', NM/kg decreases with increasing Mach, and is independent of ambient temperature. Also, while NM/kg is of practical use for a pilot, sfc is merely of academic interest. Perhaps the question confuses specific range with fuel mass flow per unit thrust (sfc)? In that case the correct answer is obviously D. I'd bet on that.
regards,
HN39
Last edited by HazelNuts39; 8th September 2010 at 10:16.
Reason: SAT