Which of the following is the amount of licenses you should use?

You work as a senior administrator at ABC.com. The ABC.com network consists of a single
domain named ABC.com.
ABC.com has wants you to install Office 365 ProPlus on 100 workstations. You have been
informed that the least amount of licenses should be purchased to achieve this.
Which of the following is the amount of licenses you should use?

A.
10

B.
20