Shuttle Diplomacy Is Negotiation

Shuttle diplomacy is negotiation:

A) that involves personal contact between national leaders and representatives.
B) between diplomats of different nations who negotiate deals while traveling.
C) between two countries that occurs in a neutral setting (i.e., in a country not directly involved in the negotiations) .
D) between two countries that takes place in multiple locations.
E) between two countries who refuse to meet face-to-face.