He was trying to buy a new mattress, he wanted something soft yet what?\nOptions:\n- hexachord\n- loud\n- hard\n- harsh\n- firm
Let's think now! Step-by-step reasoning:
User
A new mattress should be firm as well as soft. As he was trying to buy a new mattress so he wanted it to be soft yet firm.
So, the final answer is firm.
Assistant