Which of the following statement is true?

Question $1$Answer

a$.$

Objectives in multicriteria problems seldom conflict.

b$.$

In a goal programming model, there can only be one goal at each priority level.

c$.$

A problem involving only one priority level is not considered a goal programming problem.

d$.$

Target values will never be met precisely in a goal programming problem.

e$.$

Goal priorities are referred to as preemptive priorities because the satisfaction of a higher level goal cannot be traded for the satisfaction of a lower level goal.