题目内容
（请给出正确答案）
[主观题]
At the airport, Ground Control must guide a plane from point T to the beginning of the run
way R, ready to take off, avoiding any trees on the way. The plane can only move FORWARD, TURN LEFT 90° or TURN RIGHT 90°. Which set of instructions will guide the plane to the runway, avoiding any trees？
A．FORWARD 3, RIGHT 90°, FORWARD 2, LEFT 90°, FORWARD 5.
B．FORWARD 1, LEFT 90°, FORWARD 2, RIGHT 90°, FORWARD 7.
C．FORWARD 3, RIGHT 90°, FORWARD 3, LEFT 90°, FORWARD 6.
D．FORWARD 1, RIGHT 90°, FORWARD 2, LEFT 90°, FORWARD 7.
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