We collected hundreds of ______ in support of not allowing cars

We collected hundreds of ______ in support of not allowing cars into the city centre.
A、signatures
B、awareness
C、stationery
D、statements
【正确答案】：A
【题目解析】：signature签名；awareness意识；stationery文具；statements声明，报告句意：我们收集了数百个签名，支持禁止汽车进入市中心。