Oil refiners can refine a barrel of petroleum so that it yields either more home heating oil or more diesel fuel $($i$.$e$.,$ they are related goods$).$ If the price of diesel fuel falls, there is

an increase in the quantity of home heating oil supplied.

an increase in the supply of home heating oil.

an increase in the demand for home heating oil.

a decrease in the quantity of home heating oil supplied.

a decrease in the supply of home heating oil.