The correct option is B Real a/c
There are mainly three types of accounts: Real, Personal and Nominal accounts. Personal accounts are classified into three subcategories: Artificial, Natural and Representative. All assets of a firm, which are tangible or intangible, fall under the category "Real Accounts". Tangible real accounts are related to things that can b touched and felt physically, e.g., building, machinery, stock, land, etc. Intangible real accounts are related to things that can't be touched and felt physically, e.g., goodwill, patents, trademarks, etc.