(1)  In any proceedings under section 189 , it is a defence to prove that the accused person did not know, or did not have reasonable grounds for believing, that the young person was in the lawful charge of the person out of whose possession the young person was taken.

(2)  It is not a defence in any proceedings under section 189 –

(a) to prove that the young person suggested or consented to being taken away; or

(b) to prove that the accused person believed on reasonable grounds that the young person was of or above the age of 17 years.