Task: Question Answering
Input (English): Question: Given three DNA molecules of the same length (A, B and C) and in the same solvent, but with different richness in terms of G + C content (A: 50%, B: 60%, and C: 75% ), How would your melting temperatures (Tm) be ?: 
 Options:  <1> A> B> C. <2> Being in the same solvent, they would be the same in all three cases. <3> The DNA molecule C would not belong to a thermophilic bacterium, given its lower Tm. <4> C> B> A. <5> You can not know with the information of the statement.
Output (English): 4