(c) (25 points) Platform Pricing 31,11). 39A is the The demand function by a social media platform user is denoted as Mp one-shot registry fee charged by the platform, a is the number of afliated advertisers. Each advertiser is assumed to put one unit of ads 011 the social media platform, so the number of advertiser represents the amount of ads on the platform. n is the number of users who register in the social media platform. Assume that 31'; 0 and 57', 0 and 3;