Answer:
The historical cost of the debt securities available for sale was $69,670.
Explanation:
Market value of the securities = $57,320
Cumulative unrealized Loss = $12,350
Historical cost of the securities held for sale = Market Value of the Securites + Cummulative unrealized losses
Historical cost of the securities held for sale = $57,320 + $12,350
Historical cost of the securities held for sale = $69,670
Securities Held for sale are recorded at the fairmarket value and its losses are accumulated. By adding cummulative losses of security to Maerket value of security we can calculate historical cost of the security.