What configuration change should be made to fix this issue?

Refer to the exhibit.

An administrator configures Active Directory authentication as shown in the exhibit. Upon finishing setup, users are not able to log in.

What configuration change should be made to fix this issue?
A . Change leaps to https
B. Change the Directory URL to use an IP rather than a name
C. Change the plct from 389 to 636
D Change the Domain to use an IP rather than a name

Answer: C

Explanation:

Reference: https://portal.nutanix.com/page/documents/details?targetId=Prism-Central-Guide-Prism-v510:mul-security-authentication-pc-t.html