true or false and please explain why

1.

a. Melba and fred cannot own property in joint tenancy unless they are married

b. Junior, a 16 year old looking like he is 27 came into Slippery Sam's Scooter Sales wanting to buy a scooter. Junior must pay for the scooter.

c. If Tom fools Max into signing a contract, if the contract is non-binding it will more likely be due to procedural unconscionability rather than substantive unconscionability

d. Prior to the agreed upon activity being completed, the "glue" which holds a unilateral contract agreement together is "detrimental reliance" and/or "unjust enrichment".