Which shows a correct order to solve this story problem? phoebe bought 2 muffins for $1.99 each and 2 cups of milk for $1.50 each at her favorite diner. she left a $1.40 tip for the server. how much did phoebe have left from the $20 she took to the diner? a. step 1: add the price of a muffin to the price of a cup of milk. step 2: multiply that total by 2. step 3: add the tip to the final total for all the items. step 4: subtract the total amount with tip from $20. b. step 1: calculate the price of 2 muffins. step 2: calculate the price of 2 cups of milk. step 3: subtract the total amounts from steps 1 and 2 from $20. step 4: add the tip to that amount. c. step 1: add the price of a muffin and the tip. step 2: add the price of a cup of milk to the total from step 1. step 3: multiply that total by 2. step 4: subtract that total amount from $20.