Answer:
b. Cash discount.
Step-by-step explanation:
The cash discount is the discount given by the company to its customers in order to pay the amount within the prescribed limit
Let us take an example 3/15 net 30
This means 3% discount is given if payment is made within 15 days and the total credit period allowed is 30 days
So as per given situation, the term of the invoice stated the same scenario as explains above
Therefore, it is a case of cash discount