Over the past two decades, a wide gap in pay has arisen between medical ... ...

Which one of the following is presumed in the position stated above?
(A) The experience obtained by medical pro­fessionals in private clinics and hospitals will be especially important in the public health arena.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Press: Set C - Premise / Conclusion Practice