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)
