Alex is in college and is having a hard time keeping up with their bills. They have asked their parents if they could put them back on their health insurance plan since they are currently paying $100 a month. They currently pay $150 a month for the two of them, and if they add them back on, it will increase to $200. If they use the incremental method, how much would they charge Alex to be added to their plan? Select answer from the options below $67 $75 $50 $100