As part of the requirements validation effort, the quality assurance is planned to perform a static walkthrough to validate the requirements. Study the above state machine diagram and test whether the model is consistent with the requirements below:

$$ R$1$: The end$-$user should be able to switch between full power and half power by pressing corresponding buttons as many times as he$/$she wishes, before operating the microwave oven.

$$ R$2$: After selecting the desired power level, the end$-$user can set the time simply by pressing a number, followed by pressing as many number buttons as he$/$she wishes until the desired time is set.

$$ R$3$: The customer explained that the microwave oven must operate automatically in case the end$-$user opens and immediately closes the door while the oven is in operation mode $($in other words, no buttons should have to be pushed to operate the oven$).$ Does the presented model capture this requirement? If not, fix the model according to the customer$$s desired behavior.

Deliverables: Answers to questions R$1,$ R$2,$ and R$3.$ Place your answers in a Word document and click on the link above for submission.