Choose a correct English version for 我们是一年以前在深圳股票交易所注册上市的。
A. We were listed on the Shenzhen Stock Exchange a year ago.
B. We were established on theShenzhen Stock Exchange a year ago.
C. Our company was being floated on theShenzhen Stock Exchange a year ago.
D. We went into the Shenzhen Stock Exchange a year ago.