In the diagram shown, M is the mid-point of PQ. The line PS bisects LRPQ and intersects RQ at S. The line ST is parallel toPR and intersects PQ at

T. The length of PQ is 12 and the length of MT is 1. The angle SQT is 120°. What is the length of SQ? А 2В ЗС 35D 4E 5