下面哪个程序，最有可能得到下面这个图形？（ ）
turtle.setheading(0) turtle.circle(50,90) turtle.circle(-50,-90) turtle.circle(50,90) turtle.circle(-50,-90)
turtle.setheading(-180) turtle.circle(50,90) turtle.circle(-50,-90) turtle.circle(-50,-90) turtle.circle(50,90)
turtle.setheading(90) turtle.circle(50,90) turtle.circle(50,90) turtle.circle(-50,-90) turtle.circle(-50,-90)
turtle.setheading(270) turtle.circle(-50,-90) turtle.circle(50,90) turtle.circle(50,90) turtle.circle(-50,-90)
