What Did Neustadt Mean When He Wrote That Presidential Power

What did Neustadt mean when he wrote that presidential power is the power to persuade?

A) He must bargain, compromise, and convince others that what he wants is in the country's best interest and in their own interest as well.
B) Presidents have to persuade the Supreme Court to rule on presidential acts to determine their constitutionality.
C) Presidents are weak in the face of public support.
D) Presidents must use the State of the Union address to outline legislative priorities.
E) Presidents needed help, and required an expanded executive branch to function.