When a VMware virtualization product runs on a specific CPU type, what type of CPU do guest OSes see?

When a VMware virtualization product runs on a specific CPU type, what type of CPU do guest OSes see?

A.
The same type of CPU, always at 1GHz

B.
The same type of CPU, at its native clockspeed

C.
Always an AMD Athlon XP+, at the native clockspeed

D.
Always an Intel Pentium III Xeon, at the native clockspeed.