Sienna has a bag of colored marbles. the bag contains 70 green marbles, 42 orange marbles, and 28 purple marbles. what are the ratios of the number of green marbles, orange marbles, and purple marbles to the total number of marbles? a. green = 1 to 2; orange = 3 to 10; purple = 1: 5 b. green = 1 to 5; orange = 3 to 10; purple = 1: 2 c. green = 1 to 5; orange = 10 to 3; purple = 1: 2 d. green = 1 to 2; orange = 10 to 3; purple = 1: 5