What should you do on Table l?

You have a table named Table l that contains a string field named Description.
Users want to search for records in Table l based on words that might be present in Description.
The words can be anywhere in the Description field.
You need to ensure that when the users create queries that are filtered based on the Description field, the query results must be returned in the least amount of time possible.
What should you do on Table l?
A. Create a non-unique index in Description.
B. Add Description to the AutoSummary field group.
C. Create a full text index in Description.
D. Write a find method.