The figure shows the Gender, Marital Status and Profession (GMP) of a number of people. Each shape shows a different GMP.
Circle indicates total population, trapezium is males, pentagon is married, rectangle is teachers, and triangle is doctors.
What do the shaded regions represent in the diagram ?
1. married males who are teachers
2. unmarried males who are doctors
3. unmarried females who are doctors
4. married males who are neither doctors nor teachers
