Subject: mathqa
Question: two ants , arthur and amy , have discovered a picnic and are bringing crumbs back to the anthill . amy makes twice as many trips and carries one and a half times as many crumbs per trip as arthur . if arthur carries a total of b crumbs to the anthill , how many crumbs will amy bring to the anthill , in terms of b ?
Option: 
A: b / 2
B: b
C: 2 b
D: 3 b
Answer: D