一个完整的铜铸件如果开了一个小洞，再用水银填满后，铸件的质量增加94g（已知ρ_水银=13.6×10³kg/m³，ρ_铜=8.9×10³kg/m³）则小洞内水银的质量是 [ ]

A.272g

B.183g

C.230g

D.无法确定

In relation to the management and administration of a shareholding company:

(b) Explain the legal and other obligations of the board of management. (5 marks)