You will be given a definition of a task first, then some input of the task.
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 train to become an ambulance attendant [title] Meet the education requirements. [step] Most employers expect ambulance attendants to have a minimum of a high school diploma or ged. Most emt training programs also require a high school diploma or ged as a prerequisite to entering the program. <sep> (A) [substeps] This type of education should be done in high school. Many employers opt for a high school degree as a prerequisite for all emt training programs. (B) Even if you already have a degree in emergency care, you must also be an operator. Check with your country's department of emergency medical information to determine what qualifying qualifications you'll need to meet the necessary level of education. (C) However, some employers may expect a higher level of education and/or training. Many employers also require a certificate in a relevant field. (D) [substeps] Hold a bachelor's degree in a related field such as cardiology or cpr. Have at least 17 years of dental or medical experience in cpr.
Output:
C