【单选题】

Attention: human resources department

From: Jack Strong, manager
Regarding PolicyChange
Date: October 4
All employees of RyanChemicalCo. are required to familiarize themselves with the new company policy regarding vacation time.Beginning next month employees will earn an additional day off per year for every year of service to the company.Below are the main points of this policy.
1.All employees are currently entitled to 2 weeks vacation per year.
2. Under the new policy, employees are also entitled to an additional day for each year of service with the company.
3.Employees who have been with the company 5 years or more will now be credited with the appropriate number of vacation days.
4.Employees may receive up to a total of 20 vacation days per year.
lf you have further questions regarding this policy change please see me.Also, as members of the HR. department it is our responsibility to ensure that all employees of RyanChemical are aware of this policy change. Please utilize your email lists and company websites to spread word of this change.
Thank you,
Jack Strong, Manager
Human Resources
What is the maximum number of vacation days employees may receive
A、5
B、10
C、15
D、20