Answer:
Save Your Money For Large Purchases.
Step-by-step explanation:
A) Put money into saving the amount at a bank.
The reason this is the best financial choice is because you are saving the money for later. Little amounts accumulate over time and save lots of money. So, when the iPhone does come around to buy, you have the money to purchase it.
I would also pay in installation payments; because, if you pay the full amount upfront, then that could lead to other financial problems. You could pay the full amount; and then let's say that your pipes broke, you probably wouldn't have enough money OR even if you did have money, you would have to get more money quickly. With installation payments, you could actually save money to avoid future situations such as this one. Save your money!