Let two straight lines drawn from the origin O intersect the line 3x + 4y = 12 at the points P and Q such that ΔOPQ is an isosceles triangle and ∠POQ = 90°. If l = OP2 + PQ2 + QO2 , then the greatest integer less than or equal to l is :
1
44
2
48
3
46
4
42