What type of supply plan involves utilizing current resources?

Question $5$ Select one:

A$.$

Improving snow removal services with additional equipment.

B$.$

A business upgrading its technology for more efficient operations.

C$.$

An oil company's investment in new tar sands oil extraction technology.

D$.$

Toronto's plan to extend the subway system.

E$.$

An employee choosing to postpone retirement and remain in the workforce.