What is the relationship between 'Ben Edelman' and 'Harvard Business School' in the context of the input sentence.
Options: employer, brand, member of, subsidiary

In a recent paper , Ben Edelman of Harvard Business School and Julian Wright of the National University of Singapore argue that when a site knows that the prices merchants provide through it will always be the cheapest available, it cranks up investment in attracting customers, safe in the knowledge that the merchants and ultimately consumers will bear the cost.
employer