Briefly compare and contrast the two allowance approaches to estimating bad debt expense. In your answer, indicate which approach, if either, is...

Briefly compare and contrast the two allowance approaches to estimating bad debt expense. In your answer, indicate which approach, if either, is superior. 

There are two methods of estimating the bad debt expense for the purpose of recognizing theuncollectible accounts arising in any period. The two methods and their description are as follows:a....