Mark Has Created a New Google AdWords Campaign and the Ad

Multiple Choice

Mark has created a new Google AdWords campaign and the ad has been running for three days. Over the three days Mark has generated some sales from the ad, but he is curious as to how his ad is really performing. How long does Google recommend before Google AdWords users begin reviewing campaign performance too thoroughly?

A) 14-21 days
B) 5-6 days
C) 10-15 days
D) 28-31 days