What does the following program do? import turtle def main (): def square(x, y, width, color): turtle.penup() turtle.goto (x, y) turtle.fillcolor (color) turtle.pendown() turtle.begin_fill() for count in range (4): turtle.forward (width) turtle.left (90) turtle.end_fill() if turtle.hide turtle() square (100, 0,50, 'blue') 00:0 name main() - _main__': It draws a blue square at coordinates (100, 0), 50 pixels wide, in the lower-left corner. It draws a blue square at coordinates (0, 50), 100 pixels wide, starting at the top right corner. It draws a blue square at coordinates (100, 0), 50 pixels wide, starting at the top right corner. Nothing since you cannot call a function with turtle graphics