What is a valid guest portal type? 

Answer options:

A. Sponsor
B. Sponsored-Guest
C. Captive-Guest
D. My Devices

B

Reference: https://www.cisco.com/c/en/us/td/docs/security/ise/1-3/admin_guide/b_ise_admin_guide_13/b_ise_admin_guide_sample_chapter_01111.html