Mulan is dreaming about travelling from China to visit Belle in France. Given the lack of flights, the economy class return ticket will cost her $48,500. Mulan saves her money with Bank of China into an account that pays her 6.5% p.a. compounded quarterly but she has only $23,650 amount saved. How many quarters must Mulan wait until she has enough money? 58 d 40 O 45 O 42 O 54