Joanna worked 5 shifts at a used car lot last week. Joanna earns $200 for any shift she sells 4 or fewer cars and $300

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Joanna worked 5 shifts at a used car lot last week. Joanna earns $200 for any shift she sells 4 or fewer cars and $300 for any shift she sells 5 or more cars. How much did Joanna earn last week working at the used car lot?

1) Joanna sold an average (arithmetic mean) and median of 4 cars per shift last week
2) Joanna sold 3 or fewer cars during 2 of her shifts

The OA is E

Source: Manhattan Prep