Which statement is true regarding ProfiSAFE?

Which statement is true regarding ProfiSAFE?
A. ProfiSAFE traffic must be carried on a network that is physically separated from automation traffic
B. ProfiSAFE relies on the error detection mechanisms of Ethernet and TCP/IP to determine if there are network errors
C. ProfiSAFE can be used in safety applications up to Safety Integrity Level 3 (SIL3)
D. ProfiSAFE is only used by ProfiBUS PA and ProfiBUS DA devices

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