While the TM _____, the vNM _____.
A) is a kind of machine table intended to describe the behavior of a computing machine // is the actual machine computing in the real world under practical constraints such as limits to time and space
B) is the architecture of actual machines that compute in the real world under practical constraints such as limits to time and space // is a conceptual abstract architecture intended to help solve the logical mathematical problem of determining what can be computed by an algorithm
C) is an actual machine computing in the real world under practical constraints such as limits to time and space // is that actual machine's machine table, which describes the behavior of a computing machine
D) is a conceptual/abstract architecture intended to help solve the logical mathematical problem of determining what can be computed by an algorithm // is the architecture of actual machines that compute in the real world under practical constraints such as limits to time and space