Please choose the correct ending to complete the given sentence: Work World: [header] How to become a systems engineer [title] Enroll in an undergraduate engineering program. [step] Apply to a college or university with a strong engineering program. Check programs' faculty listings, and look for professors who have years of professional experience.

Ending1: You may need to earn a degree while in school so that you don't end up being billed a massive fee. [substeps] Seek a master's degree in electrical engineering. Ending2: You will likely need at least four years of graduate studies before you can be a recruiter. [substeps] Most professional engineering programs require a bachelor's degree. Ending3: Professors with years of practical experience and strong networks can help you land a job after you graduate. [substeps] There are dozens of engineering fields, and possible majors include engineering management, information technology, mechanical engineering, and aerospace engineering. Ending4: [title] Attend the graduate program you apply to. [step] The pre-engineer education program is currently running, and you can continue undergoing it throughout your undergraduate career, unless all else fails.

Answer format: ending1/ending2/ending3/ending4