To answer this question, we need to understand that CPU stands for Central Processing Unit, which is the primary component of a computer that performs most of the processing inside the computer.
Let's go through each option to understand why it is correct or incorrect:
Option A) OS/390 - This option is incorrect because OS/390 refers to an operating system, not the generic name for CPU.
Option B) OS/370 - This option is correct because OS/370 is the generic name for CPU. The OS/370 architecture was introduced by IBM in the 1970s and was widely used in mainframe computers.
Option C) OS/360 - This option is incorrect because OS/360 also refers to an operating system, not the generic name for CPU.
Option D) OS/380 - This option is incorrect because OS/380 is not a commonly used term in the context of CPU or computer architecture.
The correct answer is B) OS/370. This option is correct because it represents the generic name for CPU.