when planning a budget for a nursing unit, some variables cannot be controlled but yet still must be accounted for in order to prepare a fiscally responsible budget. which variables cannot be controlled by nurse managers? select all that apply. the number of beds on a unit. patient acuity. staff benefits. unit revenue. inventory of supplies. group of answer choices 1, 3, 4, and 5. 2, 3, 4, and 5. 1, 4, and 5. 2, 3, and 4.