Read the following article and answer the question by choosing from the options.

Only reason you 're reading this now . As I mentioned I was feeling exhausted ... so Saturday night rolls around and at 7:00 p.m. I completely passed out in my armchair . Ended up NOT going to the party at the friend 's house that I 'd been looking forward to all week .

What may be the reason I did not go to the party ?
Available choices:
+ I had to work.
+ I was sleeping.
+ I forgot.
+ I needed to study....A:
I was sleeping