Q21. What is the difference between a Visualforce page and a Lightning component?
a) A Visualforce page is a server-side technology, while a Lightning component is a client-side technology.
b) A Visualforce page is built with HTML and Apex code, while a Lightning component is built with HTML and JavaScript code.
c) A Visualforce page is used to create custom user interfaces for Salesforce, while a Lightning component is used to create reusable components for Salesforce.
d) All of the above.