Launch schedule 24/5 - Press conferencE.31/5 - TV advertising starts. Distribute posters. 7/6 - Deliver leaflets. Radio advertising starts. 14/6 - Free competition starts on the radio. How many written forms of publicity are there?
C.four

A.two
B.three

【参考答案】

A
解析：题干意为：“以书面形式作宣传的有几种?”，题中有海报和小册子两种。