Answer:
The correct answer to the given question will be Option C.
Explanation:
The YA has been used to describe or portray the period that intervention A crashes for.
The total number of weeks A may malfunction would have been:
⇒ [tex]normal \ times-crash \ time[/tex]
⇒ [tex]5-3[/tex]
⇒ [tex]2 \ weeks[/tex]
then,
⇒ [tex]Y_{A} <=2 \ means[/tex]
The other given choices are not related to the given situation. So that option C would be the appropriate choice.