What is professional ethics?

Question $12$ options:

When applied to computing, professional ethics is a $$eld of applied ethics concerned with moral issues that affect computer professionals.

When applied to computing, professional ethics is a $$eld to help professionals make more money.

When applied to computing, professional ethics is a way to demonstrate to the moralists who is boss.

When applied to computing, professional ethics is a $$eld that has only recently been discovered in the last two years.