A college offers produces three different degrees, A, B and C. Each Student needs to attend and examined by two departments M and N. Department M has two tutors teaching the modules M1 and M2 , while N has three tutors teaching the modules N1 , N2 and N3 . Degree A can be awarded to any student who passes any one module examinations in the departments M and one module in department N. Degree B can be awarded to any student who passes any one module in department M and module N1 in department N. Degree C can be awarded to any student who passes the module M2 in department M and module N3 in department
