It is appropriate to "write-down" or decrease the cost basis of an asset in the following circumstances: A) When the cost basis of land used in operations is expected to decrease in value, on an estimated basis, sometime soon. B) When the cost basis of an investment in bonds, to be held to maturity, has declined in market value. C) When the cost basis of a 25% investment in another entity's common stock has declined in market value. D) A write-down is appropriate in all the above circumstances. E) A write-down is not appropriate in any of the above circumstances