Which Statement Exemplifies Abstraction

Multiple Choice

Which statement exemplifies abstraction?

A) The president of General Motors views the company in terms of every worker, every supplier, and every car.
B) The president of General Motors views the company in terms of its corporate divisions and high-level policy issues.
C) A good approach to algorithm design and software development is to focus on how we might actually implement a particular operation.
D) A convenient way to view the hardware component called "memory" is to focus on the billions of electronic devices that go into constructing a memory unit.