The waitress and the hostess at a restaurant share the tips at the end of the shift. The average amount earned in tips between the two of them is $50. The waitress gets $30 and the hostess gets $20. If they continue to earn money at this rate, how many dollars will the waitress receive if they earn $200 at the end of the shift? A. $100 B. $120 C. $133 D. $122