Identify the ways to decrease the planned expenses of a business. $($Check all that apply.$)$

Multiple select question.

The volume of units sold can be increased by increasing sales promotion or increasing product quality.

The productivity of machines and people can be increased by improving production methods.

Products can be redesigned by developing new machines and materials.

Controls can be established by spotting areas where losses occur.

A summer product can be removed from a winter line of products.