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:
Povidone-iodine
An antiseptic used for skin disinfection before and after surgery and for the treatment of minor wounds.
Alcohol
A chemical substance found in drinks like beer, wine, and spirits, which can alter consciousness and often has intoxicating effects.
Venipuncture
The puncture of a vein with a needle, typically for the purpose of drawing blood or administering intravenous therapy.
Hydrogen peroxide
A chemical compound (H2O2) used as an oxidizer, bleaching agent, and antiseptic.
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