Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: I missed my math class this morning because I thought it said " HUM 113 " on my schedule when in fact it said " HUM 311 . " I ' m beginning to think I ' m mildly dyslexic . In other news , I met the Cavalier King Charles Spaniels I ' m going to be babysitting for a month yesterday .

Question: Why was the narrator not in class this morning ?
There was a mix up .
The narrator missed math class this morning because of a scheduling mistake.