If A={x∈N:x is a divisor of 12}A = \{x \in \mathbb{N} : x \text{ is a divisor of } 12\}A={x∈N:x is a divisor of 12} and B={x∈N:x is a divisor of 18}B = \{x \in \mathbb{N} : x \text{ is a divisor of } 18\}B={x∈N:x is a divisor of 18}, find AΔBA \Delta BAΔB.
∅\emptyset∅