Which activity would cause the short$-$term financing gap of a company to decrease?

$1.$Implementing a just$-$in$-$time inventory management system that minimizes the levels of raw material inventories required to be held.

$2.$Securing supply arrangements by placing suppliers on new single source contracts with penalties for late delivery of goods.

$3.$Renegotiating a revolving credit facility on more favorable terms.

$4.$Purchasing machinery to raise production capacity and meet increased demand.