[MUST SHOW WORK] Rafael grows spinach from his own seeds in his backyard. He sells 20 kilograms of spinach to Kamal for $4,000. Kamal spends $200 on baggies for packaging and resells the spinach on the street for $6,000. Rafael's value-added is and Kamal's value-added is Select one: OA. $1,800; $4,000 O B. $4,000; $1,800 O C. $5,800; $1,800 O D. $4,000; $5,800 OE. $4,000; $2,000