Read the following context and choose the best option to answer the question.
Context: Geoff could n't remember a damn thing . All he remembered was the drinking he had done . Lucian , who was still in shock , just sat in the bed upright , doing the same thing as Geoff .
Question: What is the reason Geoff could n't remember anything ?
Options: 
- Geoff had a seizure .
 - None of the above choices .
 - Geoff had a mental block .
 - Geoff blacked out from drinking too much .


Geoff blacked out from drinking too much .