M4-O3-Current assets: Which one is not a correct practice under the GAAP?

Group of answer choices

Generally cash equivalents include the investments purchased within three months of their maturity value.

trading securities are in current assets, but securities held to maturity is in long-term assets (non current)

Holding gain or loss for held-to-maturity securities are estimated at the end of every accounting period

Holding gain or loss for trading and available for sale securities are not reported on income statement.