You have been managing a project to construct a flyover. You have

divided the project into phases to facilitate management control. Which

of the following is a characteristic of a project phase?

a$.$ A project phase can be closed with a decision not to initiate the

subsequent phase

b$.$ A project phase should not be divided into sub$-$phases even in

complex projects

c$.$ Formal phase completion necessarily includes authorisation for

the subsequent phase

d$.$ All project phases should be of equal duration