Neveah and Jayden each own an ant farm. Nevaeh starts with 50 ants and says her farm is growing exponentially at a rate of 20% per month. Jayden starts with 240 ants and says his farm is steadily increasing by 2 ants per month.

Assuming both are accurate in describing the population of their ant farms, after how many months will they both have approximately the same number of ants?

a) 8
b) 10
c) 7
d) 9