Question: The heating of trans, cis, trans-2,4,6octatriene results in: 
 Options:  <1> trans, trans, trans-2,4,6-Octatriene. <2> cis, cis, cis-2,4,6-Octatriene. <3> There is no reaction. <4> trans-5,6-Dimethyl-1,3-cyclohexadiene. <5> cis -5,6-Dimethyl-1,3-cyclohexadiene.
5