Maya is signing her daughter up for summer activities. Some of the activities cost 510, and some of them cost $20. Maya pays a total of 5130 for 9 activities. How many of each activity did she sign her daughter up for?
Maya signed her daughter up for the___
of the $10 activities and
of the $20 activities.

1 A.3
B.4
C.5
D.6

2.A.3
B.4
C.5
D.6