If A={x:x is a divisor of 6}A = \{x : x \text{ is a divisor of } 6\}A={x:x is a divisor of 6} and B={x:x is a divisor of 4}B = \{x : x \text{ is a divisor of } 4\}B={x:x is a divisor of 4}, what is AΔBA \Delta BAΔB?
{1,2,3,4,6}\{1, 2, 3, 4, 6\}{1,2,3,4,6}
{3,4,6}\{3, 4, 6\}{3,4,6}
{1,2,3,4}\{1, 2, 3, 4\}{1,2,3,4}
{1,2,6}\{1, 2, 6\}{1,2,6}