This graphics program should draw a caterpillar. A caterpillar has NUM_CIRCLES circles. Use a for loop to draw the caterpillar, centered vertically in the screen. Every other circle is a different color. When i is even, the circle should be red. When i is odd, the circle should be green. Remember that 0 is an even number. Be sure that the caterpillar is still drawn across the whole canvas even if the value of NUM_CIRCLES is changed. (PYTHON, CODEHS 4.6.6 Caterpillar.)