The band leader is recording the number of students in the seventh and eighth grades who play flute and clarinet. Which describes the variables in the two-way table? Band Assignments Flute Total Clarinet 24 19 43 7th Grade 8th Grade Total 22 18 40 type of instrument and total number of seventh and eighth graders type of instrument and total number of seventh graders Ograde number and number of clarinet players O grade number and type of instrument