Assume You Added a Product with Custom Options to the Shopping

Assume you added a product with custom options to the shopping cart. Where will the data for the custom options be stored persistently?

A) in the sales_flat_quote table, as a serialized string in a text field
B) in the session, as a serialized array
C) in a separate table, sales_flat_quote_item_option
D) Magento doesn't store persistent data about custom options; only the new price and new SKU are stored.