Discount

Bert offers a 2% discount to his credit customers if payment is made within 20 days of purchase. Additionally, a trade discount of 10% of standard selling price is given if more than 100 units are purchased in one month. List price is $60 per unit. A customer buys 120 units in September and was expected to take advantage of the settlement discount. The customer pays 15 days later.

What is the total discount that the customer will receive?

$129.60

$849.60

$141.60

$144.00
My question is will we add trade discount aswell as total discount is asked or only settlement discount of 129.60