1. The problem asks for the equation of a line parallel to the y-axis and 3 units to the right of the y-axis. 2. Lines parallel to the y-axis are vertical lines, and their equations are of the form $x = k$, where $k$ is a constant. 3. Since the line is 3 units to the right of the y-axis, the value of $x$ is 3. 4. Therefore, the equation of the line is $$x = 3$$. 5. Among the options given, the correct answer is B) $x = 3$.