Which One of the Following Statements Most Accurately Describes Sensitivity

Which one of the following statements most accurately describes sensitivity analysis?

A) Assesses the effect on profits and cash flows of actual outcomes in comparison to budgeted outcomes.
B) Assesses the effect on budgeted profits and budgeted cash flows of a % increase or decrease in sales volumes and selling prices.
C) Assesses the effect on budgeted profits and budgeted cash flows of a % increase or decrease in the variable costs of production.
D) Assesses the effect on budgeted profits and budgeted cash flows if certain expectations and assumptions in the budget are changed.