It is D
It is collection of entity having common attribute. As in Student table each row is an entity and have common attributes.
So STUDENT is an entity type which contains entities having attributes id, name and Age.
Also each entity type in a database is described by a name and a list of attribute.So we may say a table is an entity type
Each template contains the following information:
This link is helpful
https://msdn.microsoft.com/en-us/library/ee382837(v=vs.110).aspx