撒哈拉沙漠以南非洲的国家为改变经济落后的局面，可采取的合理措施是[ ]

A．扩大初级产品的生产

B．努力发展民族工业和多样化农业

C．提高初级产晶的出口价格

D．大力推销外国的产品

--- Why didn’t you tell me the news of the meeting?

--- I knew nothing about it, or I _______ you.

A．would tell

B．had told

C．told

D．would have told