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【单选题】
类比生物遗传与优胜劣汰而形成的遗传算法的求解过程如下图示意。理解该图，回答问题。 【图片】依据图中示例及求解过程示意，思考并回答，下列说法不正确的是_____。
A.
适应度，主要用于 考察一个可能解是否接近最优解，以及接近的程度和方向，所以通常选择极值函数 ( 如最大值函数或最小值函数 ) 作为度量函数
B.
一般而言， 通过将可能入一个极值函数 ( 如最大值函数或最小值函数 ) 中获得函数值，以该函数值作为适应度的值
C.
一个问题，若要用遗传算法求解，则要能够将其映射为类似于求极值一样的函数，即函数的极大值 ( 或极小值 ) 对应了问题的最优解 / 较优解，这是问题数学建模的一种方向
D.
适应度函数可以一个极值函数，它与求解问题本身可以没有什么关系
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