How many virtual CPUs should be assigned to the destination LPAR on the POWER7 environment?

A customer is planning to migrate an existing AIX 7 environment from POWER5 hardware to POWER7. The existing deployment consists of multiple machines, each hosting many LPARs. Due to software licensing constraints, the new environment must maintain the same number of logical CPUs. The pmcycles command reports the following on an LPAR on the POWER5 environment:
$ pmcycles -m
CPU 0 runs at 2198 MHz
CPU 1 runs at 2198 MHz
CPU 2 runs at 2198 MHz
CPU 3 runs at 2198 MHz
CPU 4 runs at 2198 MHz
CPU 5 runs at 2198 MHz
CPU 6 runs at 2198 MHz
CPU 7 runs at 2198 MHz
How many virtual CPUs should be assigned to the destination LPAR on the POWER7 environment?
A. 1
B. 2
C. 4
D. 8

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