The following diagram shows two budget lines: A and B. 
Which of the following could explain the change in the budget line from A to B?
Definitions:
Domestic Producers
Companies and individuals within a country that produce goods and services for the local market.
Quotas
Quantitative limits set by governments on the amount of specific goods or services that can be imported or exported during a specified time frame.
Consumer Surplus
The difference between the total amount that consumers are willing and able to pay for a good or service and the total amount that they actually do pay.
Quota Rights
Licenses or permissions issued by a government that allow specific quantities of goods to be imported or exported.
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