ACCorDing to thE grAph ABovE， AtApproximAtEly whAt spEED，in milEs pErhour(mph)，is thE EnErgy pEr DistAnCEusED in running ApproximAtEly twiCE thEEnErgy pEr DistAnCE usED in wAlking
A、BEtwEEn 6.5 AnD 7 mph
B、BEtwEEn 5.5 AnD 6 mph
C、BEtwEEn 4.5 AnD 5 mph
D、BEtwEEn 3.5 AnD 4 mph
E、BEtwEEn 2.5 AnD 3 mph