hi, i need help figuring out the prize value for option C

Zoe wins a prize in the lottery. She has three choices: A: a single prize of US $12000 B: US\$250 the first month, US\$400 the second month, US\$550 the third month and so on fo 12 months. C: US $500 the first month and an increase of 13% each month for 12 months. Find the total prize money in all three cases. Which prize should Zoe choose. Give a reason for your