​Examine the Time Line Below

​Examine the time line below. Then select the best answer for the missing event "X".
Time Line
Order
Main Actions:
1
Susan takes a job at the new café in town.
2
On her first day, she makes many mistakes.
3
X
4
She pays the customer's dry cleaning bill.
5
Susan realizes that her new job will teach her much more than how to make a cappuccino.
​

A) ​Susan receives a huge tip from a kind customer.
B) ​Susan spills a hot cup of coffee on a customer's suit jacket.
C) ​Susan learns that being gracious is important.
D) ​Susan reflects on her first job as a retail clerk.