帮忙看一道语法题

mengyali

At its center ,the sun has a density of over a hundred times ------and a temperature of 10 to 20 million degrees centigrsde.

A       that of water                        C            than that of water

B       of water                               D            water

dogqiuqiu

应该选A，that指代density

shinedie

选C吧// 因为是比较级啊.

claudiaPQ

选A!绝对的!同意dogqiuqiu的!