Which one is the worst: selling body,mind or soul?

The prostitutes sell their body. Those scientists who
make the weapons which are used for killing the human being,
sell their mind ;and finally those who deceive people for
gaining power and wealth (among them there are
those who usually wear respectable masks such as some
politicians, lawyers, and even some academics);
they know the truth but they close their eyes
and pursuing profits is their only principle.
Which one is the worst: seller of body, mind or soul??!!!