Here is a goal: how to roast vegetables in oven

Which way makes more sense to accomplish this goal?

Options:
(A). Preheat oven to 125 degrees F. Lightly spray a baking sheet with nonstick spray. Place vegetables in a large bowl. Add olive oil, garlic and herbs de provence; season with salt and pepper, to taste. Gently toss to combine. Pour vegetables into a single layer on the baking sheet. Bake for 12-15 minutes, or until tender.
(B). Preheat oven to 425 degrees F. Lightly spray a baking sheet with nonstick spray. Place vegetables in a large bowl. Add olive oil, garlic and herbs de provence; season with salt and pepper, to taste. Gently toss to combine. Pour vegetables into a single layer on the baking sheet. Bake for 12-15 minutes, or until tender.
(B).