In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to set up a grid tied pv system at home [title] Consider how much electricity your family really needs each day or month. [step] This is important because the system includes a few solar panels and each of them has a certain amount of capacity in generating electricity. If you have a clear calculation of this problem, you won't waste your budget for purchasing these panels or buy less than needed. <sep> (A) A good system is able to produce at least 2 or 3 lights. It may (and sometimes) be enough to keep your line charging at about 200 iu or 180 usd. (B) If you want them to grow and produce faster, you'll need a system that requires a constant constant supply of electricity. The amount of electricity the individual physical systems need depends completely on how fast they are developing. (C) [title] Make sure you have a certain amount of cables to be used to connect the grid and pv systems. [step] This will need to be the maximum connection from the other solar panels. (D) Maybe you don't know about how much electricity your family needs each day or month because you just pay the bill with money. This time you can check out this figure by viewing the power meter installed in your house.
D