Which of the following statements regarding the allowance for doubtful accounts is true? Select one: a. the allowance for doubtful accounts identifies specific accounts receivable accounts that are not collectible b. the allowance for doubtful accounts decreases the amount of reported accounts receivable c. the balance in the allowance for doubtful accounts is equal to the bad debt expense for the year d. the allowance for doubtful accounts increases the amount of reported accounts receivable