A) the more the workers are working the more the products are made. This is because if 10 workers make 52 products and 90 people make 452 then 100 people can make 502 products.
Ummm okay so lets say i have 12 apples and i give 5 of them to tony and promise that i will give him 9 more tomorrow then tomorrow i will have -2 apples 12-5=7 7-9=-2 i hope i helped in some type of way :)