I got in this morning and the cleaners had spilled some coffee / glue hybrid on my desk . It had gone all the way under a box file that I use to keep all my USB gadgets out of the way : It was very firmly stuck fast : Then I had to clean up . Which was n't easy .
Why did the narrator have to clean up their desk ?
Pick the best answer from the following options:
A. The narrator made a mess .
B. Their friends made a mess .
C. The narrator spilled glue .
D. The janitors made a mass .


D