When calculating $$16\times 29$$, which of the following choices is correct? 
选项为:A:$$144$$ in the blue box represents $$9\times 16$$.  B:$$32$$ in the red box represents $$2\times 16$$.  C:The product is $$32+144 =176$$.  D:There is no regrouping in the calculation.  请回答其中一个选项.