Define the following;
Variable production cost per unit
variable cost per unit
Full cost per unit
Full absorption cost per unit
conversion cost
prime cost
Use Google to find definitions. Here's one example:
https://www.google.com/search?q=variable+cost+per+unit&oq=variable+cost+per+unit&aqs=chrome..69i57j69i60.1408j0j7&sourceid=chrome&ie=UTF-8