True/False

1. When trying to determine if the words used in an instrument condition that instrument, mere reference to another agreement is okay but incorporating another agreement is not.
2. Payment of an instrument from a particular source or fund (which could be depleted when the instrument is presented for payment) generally does not condition an instrument.
3. A note that contains a promise to pay 14 gallons of paint and to perform 40 hours of free labor in exchange for goods received is negotiable.
4. Provided that it meets all other requirements, a promissory note issued by a maker in the United States is non-negotiable if payable in German marks.
5. If an instrument does not provide for a time at which it is payable, it is deemed to be a demand instrument.
6. The fact that an instrument is undated does not affect its negotiability.