(a) Briefly explain the following terms associated with SCM:

I) Baselines

II) Check-in and Check-out

III) Versions and variants

(b) What are parallel development and branching.

(c) Explain naming of version with example

(d) Explain the relationships of the following naming in there version hierarchy:

A (1.1), B (1.2.1.1), C (1.0), D (1.1.1.0), and E (1.2)