Does anyone have all the answers to Lesson 2 unit 3 mathematics B final exam it's for connection academy . Please help.

This is the first question -

1.Which is an example of the symmetric property?

A- if 3x+2=a+6, then a+6=3x+2

B-if a=b and b=5 then a=5

C- if y =6 then y +12 becomes 6+12

D- x+2=x+2

Please help