After Enabling Strong, Reversible 128-Bit Advanced Encryption Standard Password Type-6

After enabling strong, reversible 128-bit Advanced Encryption Standard password type-6 encryption on a Cisco Nexus 7000, which command would convert existing plain or weakly encrypted passwords to type-6 encrypted passwords?

A) switch# encryption re-encrypt obfuscated switch# encryption re-encrypt obfuscated
B) switch# encryption decrypt type6 encryption decrypt type6
C) switch# key config-key ascii key config-key ascii
D) switch(config) # feature password encryption aes switch(config) # feature password encryption aes