Read the following context and choose the best option to answer the question.
Context: I somehow managed to start laundry , clean up the kitchen , play guitar hero , sort out my pills , clean the litter boxes . i really want to vacuum but i ' m so freakin hot . i think my thyroid is acting up .
Question: What may be the reason why they have extra time ?
Options: 
A. It 's the summer and they 're a teacher .
B. They only had to work half a day .
C. None of the above choices .
D. It 's their day off from work .


D