It’s A because look at the the triangles
        
             
        
        
        
Step-by-step explanation:
<em> </em><em>REFER</em><em> </em><em>TO</em><em> </em><em>THE</em><em> </em><em>ATTACHMENT</em><em>!</em><em>!</em>
<em>HOPE</em><em> </em><em>IT</em><em> </em><em>WILL</em><em> </em><em>HELP</em><em> </em><em>YOU</em>
 
        
                    
             
        
        
        
Answer:
<em><u>135</u></em> cubes would fill the prism
Step-by-step explanation:
volume of one small cube = (1/3)^3
 = 0.037 cubic units
Number of cubes that would fill the prism = 
5 cubic units / 0.037 cubic units
= 135 cubes
 
        
             
        
        
        
M=1.25 should be your answer!