Which of These Statements Best Reflects the Guideline for Having

Which of these statements best reflects the guideline for having complete and feasible marketing plans?

A) The firm insists on having good marketing research.
B) To motivate people, the firm sets achievable goals.
C) The firm ensures that people at all levels in the firm understand what, when, and how they are to accomplish their tasks.
D) The firm's marketing plan has all the key marketing mix factors and is supported by resources.
E) The firm's marketing plan enables results to be compared with planned targets, using precise marketing metrics.