Claire paid $5.75 for a movie ticket. she wants to buy popcorn for $4.95 and a drink for $3.98. claire brought $15 to the theater.

which statement best describes if an exact total or an approximate total should be calculated?

a.
claire must add the 3 amounts exactly so she will know if she has enough money to buy the drink.

b.
the cashier can round the prices to the nearest dollar to make it faster to give claire her change.

c.
claire can round the prices to the nearest dollar and then add to estimate if she has enough money.