关于视锥系统的描述，错误的是

A．视锥细胞主要集中在中央凹处

B．视锥细胞与双极细胞和节细胞连接时会聚程度小

C．视锥细胞含有视紫红质

D．对物体的精细分辨能力强

E．有较强的辨别颜色能力

Your project has a number of different work results. You are collecting information about these work results such as what costs have been incurred or committed and which deliverables have been completed and which remain outstanding. You will use this information in which of the following processes

A) Direct and manage project execution.
B) Perform integrated change control.
C) Reprot performance.
D) Verify scope.