How many rows will be stored in Marketing Cloud Intelligence after the above file is ingested?

The following file was uploaded into Marketing Cloud Intelligence as a generic dataset type:

The mapping is as follows:

Day ― Day

Web_site_source ― Main Generic Entity Attribute 01

Page Views ― Generic Metric 1

*Note that ‘web_site_key’ and ‘web_site_name’ are NOT mapped.

How many rows will be stored in Marketing Cloud Intelligence after the above file is ingested?
A . 4
B . 0
C . 1
D . 3