Which two solutions could pull in the RSS feed at the time of send?

Northern Trail Outfitters (NTO) maintains a blog for key outdoor enthusiast influencers to use in sharing their experiences with NTO equipment and the outdoors. NTO also sends out a weekly email newsletter, and they want to include links to the latest blog entries as part of the newsletter.

Which two solutions could pull in the RSS feed at the time of send? Choose 2 answers
A . Dynamic Content
B . AMPscript
C . Personalization Strings
D . External Content

Answer: A,C