A:four times the size of
B:the size four times of
C:four times the size a
D:four times as the size of
二战后期,美、英、法等反法西斯盟军在诺曼底登陆,向德军展开猛烈攻击。盟军势如破竹,解放了许多被法西斯占领的欧洲国家( )