What major questions does the $1980$ Copyright Software Act help to address?

a$.$

Protections for the source code in a software program, the rights of the purchaser to use a program, and the rights of the developer to maintain the legal title of the program.

b$.$

The most effective ways to prevent software and other digital forms of expression from being copied and transferred from one person to another.

c$.$

Whether web domains registered in the EU can still be held accountable for trademark violations committed against companies based in the US$.$

d$.$

How to prepare software code so that it becomes theft$-$proof $($in other words, how to ensure that the source code is $100\%$ non$-$transferrable and cannot be read by corporate raiders$).$