Members of the board of directors of Security First have received the following operating income data for the year ended May $31,2024$:

$($Click the icon to view the operating income data.$)$

by $$81,000$ and decrease fixed selling and administrative expenses by $$10,000.$

Read the requirements.

Requirement $1.$ Prepare a differential analysis to show whether Security First should drop the industrial systems product line. $($Use parentheses or a minus sign to enter decreases to profits.$)$

in operating income

Requirements

Prepare a differential analysis to show whether Security First should drop the industrial systems

product line.

Prepare contribution margin income statements to show Security First's total operating income

under the two alternatives: $($a$)$ with the industrial systems line and $($b$)$ without the line. Compare

the difference between the two alternatives' income numbers to your answer to Requirement $1.$

What have you learned from the comparison in Requirement $2?$

Data table