What could be the reason for this?

During an ATP check for a sales order item, the requested quantity is completely confirmed on the required date even though there is only a partial quantity in stock on that date.

What could be the reason for this? Choose the correct answer.
A . The customer material info record is set to allow partial deliveries and the customer requires a quantity as close to the requested delivery date as possible.
B . In the configuration of the scope of check, the Without Replenishment Lead Time flag is set and the material availability date is further away than today plus the replenishment lead time.
C . In the configuration of the scope of check, the Without Replenishment lead Time flag is not set and the material availability date is further away than today plus the replenishment lead time.
D . The customer master record is set to allow partial deliveries and the customer requires a quantity as soon as possible.

Answer: C