guessin you work for google since you know that they hate this.. unless you're just completely making this up trying to look like you know everyting.. yea id say the second one... seriously stop stayin sh!t if you can't back it show some facts son
i think that is normal to happen if no. of unique visitors is low exactly as in yr case 4 visitors 5 impressions and 5 clicks however with huge page impressions and unique visitors that is considered as a fraud .