A group consists of six members A, B, C, D, E and F. There are two housewife, one professor, one engineer, one accountant and one lawyer in the group. There are two married couples among the members of the group. D is a housewife and she is married to a lawyer. No woman in the group is either an engineer or an accountant. C is an accountant and married to F who is a professor. A is married to a housewife. How many males are there in the group?