The object that will have more inertia would be object A.
Inertia is the tendency for an object to remain unchanged unless acted upon by an external (or unbalanced) force. Object A would have more inertia essentially because it weighs more than object B. With more mass comes more resistance, meaning object A would be more difficult to budge. Because it takes more force for object A to move, we know that object A has more inertia.
