C, with the ten segments and moving over seven of them you will land on C. 
 
        
             
        
        
        
Y=6 In this equation you also use combine like terms .
 
        
             
        
        
        
Area = length * width for a rectangle or square
Total area = (t+5)(t+3)
the rest of the areas can be seen here 
http://prntscr.com/dc7jdg
        
             
        
        
        
The last two would be your answer :)