Question: A college student who was pledging a fraternity was required to steal a yield sign from a street intersection. At 10:00 P. M. one evening, the student went to the corner and removed the yield sign from the intersection. Motorists driving northbound were required to yield to other vehicles entering the intersection. Two hours later, a man was driving northbound toward the intersection after having just smoked marijuana. Failing to yield, the man crashed into a vehicle, killing the other driver. If the student and the man are prosecuted for the other driver's death, who shall be held criminally liable?
A: The student only, because his conduct was the legal cause of the other driver's death. 
B: The man only, because he was high on marijuana when he collided with the other driver's vehicle. 
C: The man and the student, because their acts were concurrent causes of the other driver's death. 
D: Neither the man nor the student, if the other driver had the last clear chance to avoid the accident. 
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. Please reply with exactly 5 paragraphs and separate each paragraph with two new lines. The very 2nd paragraph must start with the word "note".
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