We placed them with various banks who would facilitate the other side of the deal. Most often hedging our naturally long oil and gas position.
Of course, all of that has now changed, due to computer trading and computer programs, which is one of reasons this Bull Market is a sham, built on hot air.
OTOH... You are calling dealing in commodities ( FUTURES ),"options, which they are NOT! And YOU claim that YOU can "teach" me, about this stuff? Good grief...you even have your terminology completely wrong! No wonder you don't understand my posts and why YOUR posts are such a mess!