Sally's household consumes 1,000 litres of gasoline per year. After $0.20 gasoline tax was introduced, each household received an annual tax rebate. Is Sally's household better off or worse off with tax and rebate than without both if the annual tax rebate is:

1) With $200 tax rebate, Sally's household is?

a. Better-off

b. Worse-off

c. Could be either better-off or worse-off

2) With $300 tax rebate, Sally's household is?

a. Better-off

b. Worse-off

c. Could be either better-off or worse-off

3) With $100 tax rebate, Sally's household is?

a. Better-off

b. Worse-off

c. Could be either better-off or worse-off