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. A

   1 and 2 only

   1 and 2 only. Webmail is SaaS too.

2. B

   2 and 3 only

   2 and 3 only. UI/field customisation is a SaaS feature at tenant level.

3. C

   1 and 3 only

   1 and 3 only. Mobile access is standard.

4. D

   1, 2 and 3

   All three. Configurable SaaS, mobile access, and webmail as classic SaaS.

Summary. Official key is (d) all three. SaaS is software delivered in the browser/app: tenants can configure UI and fields, users open it on phones, and Outlook/Hotmail/Yahoo Mail are textbook SaaS mail.