$\backslash$table$[[$Situation$,$MPI,MPC$,$PI$,$Pc$],[I,30,20,30,20],[$III$,10,15,20,30],[$III$,20,20,20,20],[$IV$,30,40,20,10]]$

Assume that a purely competitive firm uses two resources, labor $($L$)$and capital $($C$),$ to produce a product. The market price of this product is $$2\mathrm{.}00.$ The Marginal Product $($MP$=$MPP$)$ and prices of the resources $($PI$)$ and $($Pc$)$are shown in above four situations.

Which situation would the firm be the least cost situation?

All of them

$11$

II and III

I and III