Which of the Following Is an Element in the 'Transaction

Multiple Choice

Which of the following is an element in the 'transaction cost approach'? 

A)  Arriving at the lowest highest possible quality for each transaction. 
B)  Provision of lists of approved suppliers. 
C)  Comparing whether to perform an activity internally or outsource the activity in the market. 
D)  Concentrate resources on a set of core competencies.