A. One shipping address per line item is possible B. Only one shipping address per order is possible C. One shipping addresses per unit of quantity is possible D. One shipping address per product type is possible
Only one shipping address is allowed in checkout. please refer to magento 2 dev docs here!
but if you wish to enable multiple address shipping then you have to enable multi shipping option from back office (this option is allowed to registered users only) to enable please refer to magento 2 dev docs here!
In all the cases it will be only one order created.