Answer this question with respect to the MEDIA SELECTION problem posted in Canvas $($Test $5$ Output document above$).$ Which of the following statements is true?

Group of answer choices

MSA $+$ MSU $<=1$ is a constraint of the problem

MSA $+$ ASA $+$ ESA $<=1$ is a constraint of the problem

$4000$MSU $+800$ASU $+6000$ESU $<=100,000$ is a constraint of the problem

MSA $+$ ASA $+$ ESA $=1$ is a constraint of the problem