Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
A. The promotion of congenial relationship at all levels of the staff leads to prosperity of the organisation.
B. Better skills increase the working capacity of employees by promoting better work habits.
C. This includes multiplication of knowledge and development of their skills.
D. Efficient management aims at qualitative improvement of its employees.