Buyers of a Good Bear the Larger Share of the Tax

Buyers of a good bear the larger share of the tax burden when the
i) supply is more elastic than the demand for the product.
Ii) demand in more elastic than the supply for the product.
Iii) tax is placed on the sellers of the product.
Iv) tax is placed on the buyers of the product.

A) i) only
B) ii) only
C) i) and iii) only
D) i) and iv) only