Change in Total Income from Raffle Tickets

Jessica is planning a fundraiser and wants to sell raffle tickets. Each ticket costs $4. She hopes to sell a total of y tickets and estimates that she will have a total income of T dollars. To calculate her total income, she uses the formula:

$$ T = 4y $$

However, if she sells 5 fewer tickets than she originally planned, her new total income would be $T', which she calculates as:

$$ T' = 4(y - 5) $$

Which of the following expressions represents the change in total income from selling y tickets to selling y - 5 tickets?