estimated to be $$160,000.$ Variable processing costs are estimated to be $$6$ per book. The publisher plans to sell single$-$user access to the book for $$46.$

$ is where total revenue $=$ total cost yielding a profit of zero. In which interval of demand does breakeven occur?

$($i$)$ Breakeven appears in the interval of $3,600$ to $3,800$ copies.

$($ii$)$ Breakeven appears in the interval of $4,000$ to $4,200$ copies.

$($iii$)$ Breakeven appears in the interval of $4,200$ to $4,400$ copies.

$($iv$)$ Breakeven appears in the interval of $4,400$ to $4,600$ copies.

$$

$

$($d$)$ Consider the following scenarios:

$\backslash$table$[[,$Scenario $1,$Scenario $2,$Scenario $3,$Scenario $4,$Scenario $5],[$Variable$,$$$6,$$$8,$$$12,$$$10,$$$11$