Sentence 1: Jill's mom sent her into the donut shop to buy a dozen. 
 Sentence 3: The worker said to pick one more 
 Sentence 4:  He told her they sold baker's dozens, which were 13 
 Sentence 5:  But she still only had to pay for 12 
 Option 1: They were out of donuts, so she left empty handed. 
 Option 2: She selected 12 donuts.