At the beginning of the Berlin Blockade，President Truman turned down the option of _______.

At the beginning of the Berlin Blockade，President Truman turned down the option of _______.

A.sending supplies through the highways，protected by tanks and troops

B.sending supplies through the waterways

C.starting large-scale airlifting

D.starting limited airlifting to test the Soviets

正确答案是A