Raymond placed 12 red marbles, 10 green marbles, and 8 marbles of other colors into a bag. He plans to draw a marble from the bag, record its color, then place the marble back into the bag before
drawing again. He repeats his plan 60 times. He drew 21 red, 18 green, and 21 other colors. What is
the experimental probability that the next draw will be a red marble?
A 15%
B 45%
C 35%
D 25%