7. If the elasticity of demand for widgets is -2.0, a 30% rise in the price of widgets will cause a

Group of answer choices

a. 30% fall in widget purchases and a 15% increase in expenditures on widgets

b. 60% fall in the quantity of widgets demanded and a 60% fall in expenditures on widgets

c. 60% fall in the quantity of widgets demanded and a 30% fall in expenditures on widgets

d. 60% fall in the demand for widgets and a 30% fall in expenditures on widgets

e. 15% fall in widgets purchases