A plant operates on Just$-$in$-$Time$/$lean principles. The total production requirements for next three days are $3000$ units of X$,300$ units of Y$,$ and $1200$ units of Z$.$ Assume that the plant has enough capacity to produce all of the units within the three$-$day period. Which one of the following plans best represents uniform plant loading for this plant?

Question $29$ options:

none of the choices are correct

Produce $3000$ units of X first, then $300$ units of Y$,$ and then $1200$ units of Z during the three$-$day period.

Produce $1500$ units of X on day $1,1500$ units of X on day $2,$ and then $300$ units of Y and $1200$ units of Z on day $3.$

Produce $3000$ units of X on day $1,300$ units of Y on day $2,$ and then $1200$ units of Z on day $3.$

Produce $1000$ units of X$,100$ units of Y$,$ and $400$ units of Z each day for the three days.