Question

T

Answer 1

Statement 3

has an error.

it must be :
DC = DC (Reflexive Property of Equality)

Answer 2

Below equality property types :
Reflexive Property of Equality: a = a
Symmetric Property of Equality: if a = b, then b = a
Transitive Property of Equality: if a = b and b = c, then a = c

Answer 3

yeah... tricky its hiding. i found it in the end... :)