Use the passage below to answer the question.
My grandmother, whom we affectionately call Nani, is the best baker I know. Her soft, warm chocolate chip cookies are better than Mrs. Field's or Rachel Ray's. Her key lime pie is the perfect delicate balance between sweet and savory. Her recipe box is her treasure chest, full of secret recipes handwritten on colorful notecards. Nani mixes and stirs and measures with as much care as a scientist in a lab. Everything tastes better if it's made by Nani, for everything she bakes is made with love.
What is the meaning of the metaphor in red?
(1 point)
Nani's recipe box is compared to a treasure chest because it is big and fancy.
Nan's recipe box is compared to a treasure chest because the items it contains are cherished
Nani's recipe box is compared to a treasure chest because the recipes are written on colorful cards
Nan's recipe box is compared to a treasure chest because it is hard to find