I think it's a, c or e since those are all close to ten but you could use a ruler
        
             
        
        
        
Gravity simply does not allow that
        
             
        
        
        
Answer:
4719
Step-by-step explanation:
 
        
                    
             
        
        
        
The answer is "<span>the number of times the account compounds interest</span>".
The general formula is the following:

wherein r is the interest rate compound each four months. 
Since there is 3*4 months in a year, then each year we compute the interest Three time, there where the factor 3 comes.