In your project，you conducted communications requirements analysis to determine sum of information needs for all stakeholders．You have determined and limited who will communicate with whom and who will receive what information．One factor that you considered while doing communications requirements analysis is that for your project，the number of communication channels______．

A．increases in direct proportion to number of people

B．decreases in inverse proportion to number of people

C．increases in exponential proportion when number of people increases

D．none of the above number of communication channels depends on the type of your project

男婴，3个月。冬季出生，足月顺产，单纯牛奶喂养，未添加辅食。近半个月来较烦躁，夜哭闹不安，多汗。体检：体重6kg，有颅骨软化。最可能的诊断是（）

A.营养不良

B.亚临床维生素A缺乏症

C.维生素D缺乏性佝偻病

D.婴儿肠痉挛

E.维生素PP缺乏