Tell me the policy types of the customer named Augustine Kerluke.
select t2.policy_type_code from customers as t1 join customer_policies as t2 on t1.customer_id = t2.customer_id where customer_details = "Augustine Kerluke"
How many are there?
select count(t2.policy_type_code) from customers as t1 join customer_policies as t2 on t1.customer_id = t2.customer_id where customer_details = "Augustine Kerluke"
Which kind of policy type was chosen by the most customers?
select policy_type_code from customer_policies group by policy_type_code order by count(*) desc limit 1