答案：B
本题考察状语从句中的省略.语法如下：
1）在when,while,whenever,till,as soon as ,if ,unless,as if,
though,as,whether等引导的时间,让步,条件,方式等状语从句中若谓语有BE,而从句主语和主句主语又相同时,则从句的主语和be可省略.
例：His opinion,whether(it is)right or wrong,would be considered.
2)在as,than,however,whatever,on matter what等引导的状语从句中,常省略某些成分.
例：Anyone,no matter who(he is),may point out our shortcomings.
本题中省略了may be ,即：
Whatever the consequences(may be),i will be on your side.
“无论结果如何,我都会支持你”
.however=no matter how“无论怎样”,wherever“无论何地”都与题意不符,故A,C,D都不对.