22 The carrot-and-stick strategy alone might not have resulted in serious negotiations had it not been for thetireless efforts of the chief UN envoy.
(A)The chief UN envoy worked very hard to pursue serious negotiations using the carrot-and-stick strategya lone.
(B)The chief UN envoy initiated and completed serious negotiations effortlessly without using the carrot-and-stick strategy.
(C)Without the chief UN envoy's hard work, the carrot-and-stick strategy itself might not have brought about serious negotiations.
(D)With the carrot-and-stick strategy alone, serious negotiations did not result from the tireless efforts of thechief UN envoy.