Adorn Furniture manufactures a small table and a large table. The small table sells for $800, has variable costs of $560 per table, and takes 10 direct labor hours to manufacture. The large table sells for $1620, has variable costs of $980, and takes eight direct labor hours to manufacture. Calculate the contribution margin per direct labor hour for the small table, A) $56 per direct labor hour B) $240 per direct labor hour C) $64 per direct labor hour D) $24 per direct labor hour