I do not understand the meaning of this question can some 1 please explain and solve it. It ask me to show my work

Annuity A makes annual year-end payments of $976.50 for each of the next 10 years, while investment B makes annual year-end payments of $600 per year forever. Show your work for the following two questions:

a. At what interest rate would you be indifferent between the two investments?

b. At interest rates above/below this break-even rate, which investment would you choose and why?