滥用独占地位限制竞争的行为的主体是公用企业或者具有具有独占地位的经营者。()

A. the fact that inventors are always those few smart people instead of those common people.
B. the situation that common people are not getting paid for their inventions.
C. the difficulty of setting up the conference call.
D. the fact that common people are buying and using inventions by those few inventors.

A. the advent and availability of the Internet.
B. the common people are passionate in contributing their ideas to help others.
C. people are willing to donate their time and wisdom to make the world better.
D. All of the above.