Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to play castle clash [title] Start off by upgrading your resources in your base. [step] You only have 30000 gold and mana at first, so you'll want to upgrade your gold and mana vaults at least to level 4 so you can have enough. Things cost a lot more than usual on castle clash, so you'll need as much of the resources and possible.

Ending1: [substeps] If you want to upgrade your mana, consider purchasing a weapon that takes a lot of the mana, like an assault rifle. [title] Use an assault rifle to defend your base. Ending2: [title] Start advancing until you meet the goal goals. [step] Then enter castle clash in any attack level you like and continue advancing. Ending3: [title] When you are level 4, you need to build your castle defense. [step] Look where the layers are, by clicking a layer of layer in the bottom left. Ending4: [title] Upgrade your town hall to at least level 4. [step] The town hall is very important for your base.

Answer format: ending1/ending2/ending3/ending4