单选题
下列图形可能是哪段代码执行后的结果？（ ）
A
import turtle
turtle.shape("turtle")
turtle.forward(120)
turtle.right(90)
B
import turtle
turtle.shape("turtle")
turtle.forward(120)
turtle.right(-90)
C
import turtle
turtle.shape("turtle")
turtle.forward(120)
turtle.right(180)
D
import turtle
turtle.shape("turtle")
turtle.forward(120)
turtle.right(-180)