seller was able to go to the closing and sign the paperwork to sell a parent's property while the parent was still in the hospital. How could this be possible?OA The seller may have been named an executor of the parent's will.O B$.$ The parent may have had a power of attorney drawn up making the seller the attorney$-$in$-$fact.O C$.$ The seller and the parent may own the property as joint tenants, so that the seller may sign as owner. OD$.$ The parent's surgeon recommended that this be permitted to alleviate stress regarding this pending transaction.