Based on the information given in the attached image, help me determine:

A$.)$ If increasing production of both the circuit board and the I$/$O Sub in periods $2,3,$ and $4$ would be beneficial or not. $($Adressed under the bold heading "Capacity Caper".$)$

B$.)$ A breakdown of inventory and capital costs considering the fact that orders cannot go unfilled and customers cannot wait, but there is a possibility to subcontract work or expedite purchase orders. $($Adressed under the bold header "Inventory and Capital Cost Conundrum".$)$

C$.)$ The scheduling of jobs using the "Johnson's Rule" scheduling technique to determine if it is a more efficient way of scheduling jobs. $($Adressed under the bold heading "Scheduling Schizophrenia".$)$