Answer:
b. real estate short sale
Explanation:
In this situation it seems that this sale would be termed "real estate short sale", if no mortgage payments have been made by Fredrick. A short sale is when the amount the seller gets for selling a piece of real estate is not enough to cover the debts gathered by the liens. This is the case in this scenario since after placing the 30k downpayment Frederick owed 120k in mortgage. Since he only sold the house for 110k this left him in debt for 10k.