Match the following equation to the correct situation.

9g-g=8g

a.
the number of girls in a caravan of cars when one more car with 9 girls is added to the caravan.

b.
the number of bags of grapes left in the fruit drawer after taking out one of 9 bags of grapes.

c.
the number of loads left in a garbage truck after one load has been dumped from 8 loads.

d.
the number of gallons of gasoline left in a car when one gallon more than 9 has been used.