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 write an email to human resources [title] Address your email to the proper person. [step] Check the human resources directory and see if there's a person assigned to handle the type of problem you need addressed. There may also be a point of contact assigned to your department in the company. <sep> (A) If you're concerned about your issue being taken seriously, you can also reach out directly to the head of human resources. [substeps] Double check that only the person you want to contact is addressed in the email. (B) If you need to address someone personally, this is your best option. [substeps] You may be required to fill out a form to initiate the administrative assistant promotion. (C) [substeps] Make sure to use a personal email address you understand, as this will preserve the professionalism of your email account. You may also be told to resend important emails or those sent to hr vice versa. (D) [substeps] Your suggested address may vary slightly from company to company. In some places, it's better to send an email as your employer, while others will require you to include your full name to properly address the letter.
Output:
A