IS题The Great Gatsby is now considered a clasic novel set in

IS题
The Great Gatsby is now considered a clasic novel set in America's Jazz Age,but in 1925( its reviews would be mixed and its sales would have been disappointing.)
A.it had mixed reviews and its disappointing sales
B.its reviews were mixed and its sales disappointing
为什么?与A比较为什么不选A呢?（p.s.我觉得A...and...的结构更平行,而B中its sales disppointing很奇怪.少了were）
THX~