You are a developer for Kylie Cosmetics Shopify App. To create a new checkout, you can send a POST request to the admin/checkouts.json endpoint. If you sent the following JSON string to the endpoint, what would be returned? (Assume that variant_id is correct)
Checkout API image
A: An error would be returned, as the checkout object is missing parameters necessary to process the customer’s payment
B: The checkout object, including a web_url parameter which can be used to redirect a customer to this URL for Shopify's web checkout experience
C: The checkout object, including a `checkout_id` parameter which identifies the customer’s transaction