The position and positional values or English Alphabets are:Given: TSR60 : OQS90 :: ZVT80 : ? :: WKU100 : RIV150The logic followed here is:
Similarly,
Thus, QTY120 is related to the third letter-number cluster in the same way as the second letter-number cluster is related to the first letter-number cluster and sixth letter-number cluster is related to fifth letter-number cluster.Hence, the correct answer is "Option 2".