单选题：In the Tic-tac-toe game, a "goodness" function of a position is

In the Tic-tac-toe game, a "goodness" function of a position is defined as $$ f(P) = W_{computer} - W_{human}$$
where $$W$$ is the number of potential wins at position $$P$$.
In the following figure, `O` represents the computer and `X` the human. What is the goodness of the position of the figure? @[A](2)




A. -1
B. 1
C. 4
D. -2




A.-1
B.1
C.4
D.-2


答案：A