Answer: D. it must be able to charge different access fees.
Step-by-step explanation:
Two part pricing refers to the charging of two prices for access to a service which are a fixed price(lumpsum) and a variable price for every unit used.
If one wants to capture all consumer pricing with this strategy and customers are different, the company simply needs to be able to charge different access fees.
This way they'll be able to charge the different customers different prices based on their willingness to pay such that they will capture all consumer surplus.