Which of the following statements about MAC routing is incorrect?

Which of the following statements about MAC routing is incorrect?
A . The Flag value of the migration attribute in the MAC route is 1, indicating a static MAC. At this time, migration processing will not be performed. Static MAC is preferred.
B . When a MAC route is migrated, the one with a larger sequence number in the MAC migration attribute will be preferred.
C . Only IRB and IRB6 type routes in MAC routes will fill in two labels (that is, both mpls label1 and mpls label2 in the message will be filled with valid values)
D . The Route Distinguisher value (RD value) of the MAC route is generated by the value configured in evpn source-address

Answer: D