Just multiply all numbers to get the total number of bits:
25*50*12 = 15000 bits.
A software vendor is an organization specializing in making and selling software for mass or niche markets.
A software dealer is an organization which sell software produced by others.
Meanwhile, Software distribution<span> is the process of delivering </span>software<span> to the end user. And the person or organization who are responsible for distributing software to others are called as software distributors.</span>
Here the answer is A.