Details such as manner of packing, kinds of packing materials and the burden of packing cost should be unmistakably stipulated in the ______ concerned and strictly observed by both the seller and the buyer.

The first English essayist Francis Bacon composed, during his lifetime, numerous prose work, and --------- is unmistakably among the most eloquent and elegant essays produced in English Renaissance. A: Of Studies B: Ode to the West Wind C: The Tiger D: Don Juan