Adding more cores to a processor will not improve performance if
A. The cores are all the same size
B. The program only contains steps which must be executed in sequence
C. Several parts of the problem can be worked on at once
D. No part of the program can be done in parallel with another part
E. More cores means more power consumption
F. Program execution speed depends on the clock frequency
G. The program can be broken into multiple parallel paths
Answer:
B. The program only contains steps which must be executed in sequence
D. No part of the program can be done in parallel with another part
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