单选题
运行下列程序后，绘制出以下哪个图形？（ ）
import turtle
turtle.pensize(3)
turtle.forward(150)
turtle.circle(50,180)
turtle.forward(180)
turtle.circle(48,180)
turtle.forward(150)
turtle.circle(45,180)
turtle.forward(120)
turtle.done()
A
B
C
D
