A company sells wooden chairs at a selling price of IDR $30$ thousand per chair. The purchase cost from the supplier is IDR $16$ thousand per chair. The company gives sales commissions to salespeople of $10\%$ of the amount sold and incurs shipping costs of IDR $1$ thousand per chair.

In order to support its operational activities, the company rents a coworking space with a rental fee of IDR $5$ million per month and other operational costs $($salaries$,$ utilities$)$ of IDR $10$ million per month. The company does not have other costs outside operational activities.

If there is a tax rate of $20\%,$ how many seats must be sold to achieve the Net Income target of IDR $10$ million?

a$.2,550$ units

b$.2,600$ units

c$.2,700$ units

d$.2,750$ units