Hey there. Sounds like an interesting story..
I would probably chose B as the best choice since it summarizes the main points of the story. A is the second best choice, but it only mentions the guitar. C and D both miss major parts of the story, only mentioning the clothes and shopping. Hope this helps you out. :D
        
             
        
        
        
Empirical 
<span>based on, concerned with, or verifiable by observation or experience rather than theory or pure logic.</span>
        
             
        
        
        
Pacing in regards to writing is the rate at which big events happen. For example, a story would have slow pacing if it's mostly just people having small talk. When a murder or catharsis occurs, the pace picks up. When a piece of literature or filmography has bad pacing, the transition between slow and fast pacing is all but nonexistent. When it has good pacing, the big events are molded into the story appropriately and naturally. Hope this helped.
        
             
        
        
        
Easiest way to write a summary of a book is to read the first chapter, a few of the middle chapters, a few pages here and there, and the last chapter. Summarize the book, and add little details you think might be important. What do you need help with specifically though?