What a surprise! I _____ you _____ here in Wuxi. [ ]

A. don't know, are

B. don't know, were

C. didn't know, were

D. didn't know, are

金融街街道的标识以（）字为主要设计元素，标志在色彩上用象征富贵的（）色和繁荣的（）色渐变交替组成。