$12.$ Referring to the below items, which items outlined below are classified as ordinaryconcept income.$($a$)$ Salary received by an employee.$($b$)$ Compensation received by an injured worker for loss of salary because he wasunable to work for four weeks.$($c$)$ A Christmas present received by a daughter from her mother.$($d$)$ Proceeds from selling the copyright to a book. The recipient was an employeeaccountant who wrote a novel in her spare time over a number of years.A$)($a$)$ onlyB$)($a$)$ and $($b$)$C$)$ All itemsD$)$ None