So Nicole held a party to celebrate her birthday yesterday . It was really nice , though she got rather drunk rather quickly and was goofy and skipping around the house and tackling Kent . xD It was nice seeing Adrian and Tony again ( I had n't seen them since the cottage ) , and recalling the insanity of the cottage weekend ! Trevor and I walked home sometime after 1 am , and it was still warm and muggy and NICE .

Question with options to choose from: Why did Nicole get so drunk that she was skipping around the house and tackling Kent ?

[I] None of the above choices ..
[II] She is upset with Kent for cheating on her so she is getting drunk and attacking him.
[III] She did not realize the proof of the liquor that Adrian and Tony brought so she got drunk fast.
[IV] It was a special occasion so she indulged to a greater extent than is normal for her.
[IV]