A Research Proposal

A research proposal

A) should be written by the marketing manager--not the researcher--since the manager knows what needs to be done.
B) usually can't provide much information about how data will be collected, since it is hard to tell until the research is started.
C) might lead a marketing manager to decide that the proposed research will cost more than it is worth.
D) is a plan developed during the problem definition stage of research.
E) All of the above are true.