please give final answer of both questions... I'll give you up thumb definitely

3) In the long run, all factors of production are A) variable. B) fixed. C) materials. D) rented. 4) Which of the following is NOT an explicit cost? A) $200 to hire 2 gardeners for landscaping work B) $1500 to buy bricks for the driveway of your house C) \$25 for lunch to serve to your workers D) the $100 in interest you lost by using your CD funds to pay for a new pizza oven