Which of the following are types of service defined in ITIL? 1. Enabling 2. Core 3. Enhancing 4. Computer

This option omits 'core' (item 2), which is one of the three valid ITIL service types, and incorrectly includes 'computer' (item 4).

This option incorrectly includes 'computer' (item 4), which has no definition as a service type in the ITIL framework.

This option omits 'enhancing' (item 3), which is a defined ITIL service type, and incorrectly includes 'computer' (item 4).

ITIL's service typology consists of core services (delivering basic outcomes desired by the customer), enabling services (services required for a core service to be delivered but not perceived as value in themselves), and enhancing services (services added to a core service to make it more appealing). 'Computer' is not a service type in any ITIL version, making items 1, 2, and 3 the complete and correct set.