Please help me with these MCQs-

1.Assume a monopolist can prevent resale of its product and that it has complete information about each of its customers. Although each customer has a different demand curve, the seller can identify each customer's demand curve before a purchase takes place. It faces the inverse market demand of P = 160 - 10Q, with marginal cost of MC = 10 + 5Q. The deadweight loss at the profit-maximizing result is $____.

a.200

b.0

c.500

d.400

2.(Figure: Tariff Pricing Strategy I) If a firm uses the optimal two-part tariff pricing strategy, the entrance fee is _____, and the per-unit price is _____.

Price ($) 20 18 16 14 12 10 MC NGO D MR 0 1 2 3 4 5 6 7 8 9 10 QuantityScenario A Scenario B Golf History Golf History Channel Channel Channel Channel Hem $10 $7 Shrishti $12 $15 Sadhil 10 7 Aahva 8 10 Scenario C Scenario D Golf History Golf History Channel Channel Channel Channel Manan $9 $4 Adah $ 6 $ 8 Taarush 7 8 Pavati 10 11Consumer Valuations for Two Software Programs Statistical Program Graphing Program Laksh $1.200 $900 Bhuv 800 1,500Price ($) 12 10 6 4 2 MC MR D Quantity 2 4 6 8 10 12Consumer Valuations per Season Consumer Lawn Cutting Fertilizing Bundle Ben $ 800 $400 $1,200 Ethan 1,000 250 1.250