Which strategy should the Solution Architect choose to handle this scenario?

Refer to the images below:

As part of its solution to accelerate overall sales. Universal Containers (UC) has chosen to implement a CPQ solution using Salesforce CPQ. As part of the CPQ solution, there is a requirement to retain UC’s ERP as the Pricing and Product master.

UC’s business process results in Products and Pricing being updated sporadically once a week, and then on a much larger scale on a monthly basis, which could result in a large amount of records that need to be updated in Salesforce.

Which strategy should the Solution Architect choose to handle this scenario?
A . Option A, utilizing a VF/Lightning component in combination with an Apex Controller to make a REST call to the external service
B. Option 6, utilizing Process Builder and Platform Events to communicate with the external services Subscriber Listener
C. Option C, utilizing a VF/Lightning component in combination with an Apex Controller to make a call utilizing the Streaming API
D. Option D, utilizing an external ETL tool to batch load the records into Salesforce

Answer: D