Answer:
The correct answer is a. lowest prices.
Step-by-step explanation:
In premium and prestige branding stratergies price is irrelevant. Your customer loyalty is associate with the feeling of superiority he/she gets from the consumption of your product.
So in case of competitive advantages for high premium product the company should focus on quality, surrounding, best service delivery, ethical production process than price as your customer in this case is rich and is looking for satisfaction of self actualization needs.