在不断增加粮食生产的基础上，河南省的农民正在进一步发展多种经济。
A．On the basis of steadily developing grain production, farmers in Henan Province are further diversifying their economy.
B．Based on steadily developing grain production, farmers in Henan Province are further diversifying their economy.
C．As steadily developing grain production, farmers in Henan Province are further expanding their diversified economy.
D．Like steadily developing grain production, farmers in Henan Province are further expanding their diversified economy.