What Impact Did the Nationalist Smashing of the Workers? Movement

What impact did the Nationalist smashing of the workers? movement have on the development of the Communist Party in China?

A) It destroyed the early Communist movement, leaving only small cells of intellectuals and students.
B) The slaughter of the workers in Shanghai had little impact, because the great concentration of workers was in Beijing.
C) It propelled Mao to leadership.
D) It forced the Communists to become increasingly dependent on the Soviet Union.