Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to choose a combo alarm system for a car [title] Visit a dealer. [step] Ask if your car dealership can recommend a car combo alarm system. As a professional, your car dealer will most likely know which types of alarm systems are available for your car and which are most compatible.

Ending1: [title] Try out different systems for two advantages. [step] Different systems can work for different people depending on how many people are in the car. Ending2: They should be able to give you detailed information on the areas of the car that you should use a combo alarm system with. [title] Test it out at yard sales or at the construction site. Ending3: [title] Take a minute and think about which specific car alarm features would be useful to you. [step] Though all combo alarm systems for cars combine a number of features, each system offers different a combination. Ending4: [title] Consider why the car alarm system operates. [step] Know your different components and try out different combinations to make sure that you will get the highest coverage possible.

Answer format: ending1/ending2/ending3/ending4