The bullwhip effect is a distribution channel phenomenon in which demand forecasts result in inefficiencies in the supply chain. (Got this off from Wikipedia)
When I revise, I go through my paper and highlight all the mistakes that I can, using a different color for each kind. Then after I have done that, I just go through and fix them. It helps the revision go quicker and be more manageable.
To show men are mortal and leo Tolstoy is man
I think the answer is B.
Hope it is helpful :)