Task: Question Answering
Input (English): Question: RNA polymerases are characterized by: 
 Options:  <1> Begin RNA synthesis without the need for primers. <2> Synthesize RNA in the 3 '-> 5' direction. <3> A lower error rate than DNA polymerases. <4> Incorporate ribonucleotides without the need for a mold. <5> Enter T instead of U.
Output (English): 1