1.Batman needs to have his Bat Cave cleaned.

He posts this need on JusticeBook and gets the following responses:

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a.Lex Luther will use intense radiation to eliminate all dirt and bacteria in exchange for one pound of kryptonite (valuable ore)

b.Catwoman will clean if Batman will watch her cats next week

c.Robin says he will do it to contribute toward his expenses since he lives with Batman for free

d.The Flash offers to do the job in exchange for speed (illegal drugs)

e.Green Arrow will do the work if Batman will teach him some sweet martial arts moves

f.Since Batman cleaned the Fortress of Solitude last month, Superman says he'll do it to pay Batman back for helping him

g.Poison Ivy will do the work if Batman will guarantee that he will not use herbicides on his lawn in the spring

h.Scarecrow will do it since Batman has already promised to do his taxes next week.

Determine whether or not each of the above offers, if accepted, would constitute a binding contract (Y/N).If not, briefly indicate why.