How does the Salesforce Lightning Design System (SLDS) ensure the UI components align with the theme?

Cloud Kicks wants to implement its company colors in all UI components, like buttons and icons, using a custom themes.

How does the Salesforce Lightning Design System (SLDS) ensure the UI components align with the theme?
A . Design tokens prefixed with "brand"
B. JS libraries loaded from a static resource
C. CSS Hex colors
D. Builder panels

Answer: A