Grey Ltd provides it's customers with discounts. The stand alone selling price of it's product is $$200.$ Customers who pay on time receive a $10\%$ discount. $80\%$ of customers pay on time. On the $1$st February $2024,$ Grey makes a credit sale of $$100.$ Under AASB $15$ Revenue from Contracts with Customers, the amount of revenue that Grey should recognise is:

$$184.$

$$200.$

$$144.$

$$180.$