Explanation:
A and B are the correct answers, as installing an Aloha certified app and upgrading to an Enterprise Edition org are the best solutions to enable advanced quoting in the current Professional Edition org. An Aloha certified app is an app that does not count against the org limits, such as objects and tabs, and can provide additional functionality and features. Upgrading to an Enterprise Edition org can increase the org limits, as well as provide access to more customization and automation options. C is incorrect, as creating and installing an unmanaged package is not a good solution, as it will consume the org limits and may not provide the desired functionality. D is incorrect, as buying more user licenses will not increase the org limits, but only the number of users who can access the org. You can learn more about this topic in the Salesforce Editions and Limits module on Trailhead.