Starting at point B in the diagram below,identify which combinations of points illustrate technological change.Give a brief explanation to support your answer. 
Definitions:
Marginal Returns
The additional output gained by adding one more unit of a particular input while keeping other inputs constant.
Transferability Of Ownership
The ability to legally transfer the title or ownership of assets or property from one entity to another.
Principal-Agent Problem
A challenge in situations where one party (the agent) is supposed to act in the best interest of another party (the principal) but may have self-interests that conflict.
Corporate Form
A legal entity structure for a business, recognized by the law as separate from its owners, and offering limited liability.
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