After the Buddha's death, how did Buddhism spread?

Question

A.
Missionaries traveled around Asia and taught people about Buddhism.

B.
Asian governments heard about the Buddha and required people to become Buddhists.

C.
Doctors throughout Asia began to encourage their patients to meditate if they were ill.

D
The Buddha's children wrote books about his life and had them distributed throughout Asia.

Answer 1

my answer is a

Answer 2

Yes, a;

Answer 3

ok thx