As we can see, from the table, only those buyers are able to buy
the tickets whose willingness to pay is greater than the market
price which is $40. So, we can say that only Ken and Lisa are able
to purchase the tickets as their willingness to pay is greater than
the market price. Also, consumer surplus is the difference between
the maximum willingness to pay and the actual price paid by the
buyer, therefore, in this case, consumer surplus is $30
((50-40)+(60-40)), so the right answer is option B.