Andre is buying snacks for the track and field team. He buys a pounds of apricots for $6 per pound and b pounds of dried bananas for $4 per pound. He buys a total of 5 pounds of apricots and dried bananas and spends a total of $24.50. Which system of equations represents the constraints in this situation?

A: 6a+4b=5
a+b=24.50

B: 6a+4b=24.50
a+b=5

C: 6a=4b
5(a+b)=24.50

D: 6a+b=4
5a+b=24.50