Correct Answer: B
Explanation:
Choice A, born B type male can do job in R type.
Choice C, After retirement the born B type male is reverted to type B, therefore, his son is of B type and can do job in type R.
Choice D, born B type can do job in R type and is converted to R type, so his son can do job in B type.
Choice E, After marriage with R type woman, born B type male becomes R type so he can do job in type B.
Choice B, born B type is reverted to type B after retirement so his daughter who is of B type cannot do job in B type