What are two actions Get Cloudy Consulting can take to review their data for completeness and consistency?

Get Cloudy Consulting needs to evaluate the completeness and consistency of contact information in Salesforce. Their sales reps often have incomplete information about their accounts and contacts. Additionally, they are not able to interpret the information in a consistent manner. Get Cloudy Consulting has identified certain ""key"" fields which are important to their sales reps.

What are two actions Get Cloudy Consulting can take to review their data for completeness and consistency? (Choose two.)
A . Run a report which shows the last time the key fields were updated.
B . Run one report per key field, grouped by that field, to understand its data variability.
C . Run a report that shows the percentage of blanks for the important fields.
D . Run a process that can fill in default values for blank fields.

Answer: A,C