The 10,000 accounts receivable of DEF Company have a total book value of $120,000. A CPA has selected and audited a sample of 100 accounts with a total book value of $1,000 and an audited value of $1,200.Usingmean-per-unitestimation, an auditor has taken a sample of 200 from a population's 40,000 items; that population has a book value of $200,000. She found that in her sample the average audited value was $4.20, while the average book value was $5.20. What is the estimated total audited value of the population?

$160,000.

$161,538.

$168,000.

$200,000.