贡献的计算公式可以表述为:( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
TCM= px-bx prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
TCM= p-b prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
TCM= px-b prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
TCM= p-bx prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>