Which action should the Developer take, given that JavaScript controllers CANNOT be used?

A Digital Developer wants to selectively retrieve products and process them from an iPhone.

Which action should the Developer take, given that JavaScript controllers CANNOT be used?
A . Use import/export in Business Manager.
B. Create a webservice to retrieve products.
C. Use OCAPI and invoke it in native language.
D. Use WebDAV Client to retrieve products.

Answer: D