Suppose You Are the Last Human on a Dead Planet

Suppose you are the last human on a dead planet. Only one other living thing exists-a maple tree. You are preparing to leave the planet for good, and you are debating with yourself about whether you should kill the tree before departing. In the end, you decide it would be morally impermissible to kill the tree. Your reluctance to kill the tree shows that the tree has

A) no moral status.
B) instrumental value.
C) moral status.
D) aesthetic value.