Please choose the correct ending to complete the given sentence: Work World: [header] How to be a plumber [title] Take relevant classes. [step] Even in high school, you can take certain classes that will prepare you for plumbing. A number of high schools offer vocational training for upperclassmen.

Ending1: Your area may also offer classes that may help you gain practical skills like carpentry, engineering, budgeting, and accounting. If you are trying to gain a hard edge in school, consider joining a science class or joining a engineering support group with friends. Ending2: You'll need to take the following classes to advance in your career : [substeps] Electrical chemistry chemistry plumbing plumbing irrigation irrigation mechanical engineering production [title] Earn an advanced degree. [step] As a plumber, you will likely be required to take continuing education courses in both communication, microeconomics, and physical plumbing. Ending3: Taking these classes will give you a practical push into carpentry. This will also give you some great tips on how to prepare and use your joints properly. Ending4: Ideal courses would be in plumbing and heating. You can still prepare yourself by enrolling in classes in math, physics, and computer technology.

Answer format: ending1/ending2/ending3/ending4