Optimizing logic operations

Below link takes you to a page where you get study material on Logic operations. Concepts discussed here are close enough to that discussed in the class.
http://www.facstaff.bucknell.edu/mastascu/eLessonsHTML/Logic/Logic3.html

After understanding that try this question:

Question: A life insurance company decides to gift its customers as part of its CRM initiative. It wants to use following data for deciding the gift to be given to a customer.

A) Number of years of regular premium payment more than 4 years
B) Annual premium amount not less than Rs. 16000
C) Education level of the customer at least Master and
D) Annual income of the policy holder at least Rs 700000

If the condition B and any two or more of remaining conditions are satisfied the customer qualifies for "High Valued Customer" gift.
If the condition A and at least one of the remaining conditions are satisfied the customer qualifies for 'Valued Customer' gift.
Customers qualifying in both the above categories will get the higher of the two gifts that is 'High Valued Customer' gift only.

Derive logic expressions for each of the categories (High valued customer and Valued customer) that will generate the list of customers qualifying in that category.