In the Sweet Action! Supply Chain, the Flowers Produce the Nectar

In the Sweet Action! supply chain, the flowers produce the nectar which is collected by the bees. The busy bees take this nectar and produce honey, which is collected by the beekeeper, who puts it in quart jars and supplies it to the baker. The baker produces a lovely array of confections, which are purchased by the local restaurant. The restaurant sells these confections to their loyal diners, who gleefully consume them and nag the chef for his recipe. Which of these statements about this supply chain is best?

A) The busy bees are a first-tier supplier of the local restaurant.
B) The beekeeper is a first-tier supplier of the local restaurant.
C) The baker is a first-tier supplier of the local restaurant.
D) The local restaurant is a first-tier supplier of the loyal diners.