After Steve Was Asked How His Summer Break Was,he Offers

After Steve was asked how his summer break was,he offers the following reply: "My summer was great.Yes,great as the Great Wall of China.China is one place I have never been.I sure do like to travel.My brother used to work for a travel agent a long time ago.It sure has been a long time since I've seen my sister." His reply is an example of

A) loose associations.
B) silly affect.
C) catatonia.
D) a negative symptom.