Using the logic of Bullwhip effect $($all operations keep one period inventory$),$ what would the effect on the chain be if demand fluctuated period by period between $100$ and $95$ and $90?$ That is$,$ period $1$ has a demand of $100,$ period two has a demand of $95,$ period three has a demand of $90,$ period $4$ has a demand of $85$ and so on$.$