Which shows a correct order to solve this story problem?

kristie bought 4 drinks for $1.99 each and 4 muffins for $1.20 each at the local café. she left a $2.30 tip for the server. how much did kristie have left from the $30 she took to the café?

a.
step 1: add the price of a muffin to the price of a drink.
step 2: multiply that total by 4.
step 3: subtract the total amount from $30.
step 4: add the tip.

b.
step 1: add the price of a drink and the tip.
step 2: add the price of a muffin to the total from step 1.
step 3: multiply that total by 4.
step 4: subtract that total amount from $30.

c.
step 1: calculate the price of 4 drinks.
step 2: calculate the price of 4 muffins.
step 3: add the total amounts from steps 1 and 2 to $2.30.
step 4: subtract that total amount from $30.