Considering the purpose of most propaganda, C) should be most wary of in this footage i.e; the bias present in propaganda materials.
        
             
        
        
        
First, find the equation of the line. 
the slope is given, so y=-5x+b
now use the given point to find b: 228=-5*(-3)+b, b=228-15=213
so the equation of the line is y=-5x+213
when y=517:                         517=-5x+213
                                              304=-5x
                                              x=-60.8
                                             
        
             
        
        
        
Answer:
it's point no B opens at nine and close at 18:30
 
        
                    
             
        
        
        
He’s a baddie and is a barb