What Are the Three Main Mechanisms Through Which Globalisation Can

What are the three main mechanisms through which globalisation can promote productivity and increasing living standards?

A) Exposure to the world's best practices, better resource allocation and savings deployed to productive investment.
B) The internet, more access to foreign direct investment and deregulation of markets.
C) Outsourcing to low labour cost countries, increased workforce mobility and streamlining of senior executives salary packages.
D) More cross-cultural exchanges, improved communication technologies and better supply chain modelling.