How is this achieved?

A Magento Commerce merchant is running a sale for an upcoming weekend. The merchant will offer 15% off side-wide and will show the original price and the sale price on each product through the site. The discount will take effect on Friday at midnight arc end on Monday morning at 9am.

How is this achieved?
A . Schedule an import of Special Prices and o Prices and configure it to run at the appropriate time Schedule another import to remove the Special Prices.
B . Create a Catalog Price Rule and set Start Time and End Time in the Condition tab
C . Create a Cart Price Rule and a Scheduled Update appropriate start Time and End Time.
D . Create a Catalog Price Rule and a Scheduled Update with the appropriate start Time and End Time.

Answer: C