With reference to "Software as a Service (SaaS)", consider the following statements: 1. SaaS buyers can customise the user interface and can change data fields. 2. SaaS users can access their data through their mobile devices. 3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS. Which of the statements given above are correct?

1. Statement 1: SaaS platforms often provide users (buyers) with options to customise aspects like the user interface (e.g., branding, layout) and configure data fields relevant to their specific use case, within the limits set by the provider. This statement is generally correct. 2. Statement 2: Accessibility across devices is a hallmark of SaaS. SaaS users can typically access the application and their data from any internet-connected device, including mobile devices (smartphones, tablets), usually through a web browser or a dedicated mobile app. This statement is correct. 3. Statement 3: Web-based email services like Outlook, Hotmail (now part of Outlook.com), and Yahoo! Mail are prime examples of SaaS. The software is hosted centrally, accessed via the internet, and managed by the provider, with users accessing their email service and data without installing or managing the software locally. This statement is correct. 4. Since all three statements are correct, the correct option is (D).