Which expression describes the locus of zzz such that ∣z−3i∣+∣z+3i∣=10|z - 3i| + |z + 3i| = 10∣z−3i∣+∣z+3i∣=10?
A circle of radius 5
An ellipse with foci at ±3i\pm 3i±3i
A hyperbola with foci at ±3i\pm 3i±3i
A line segment from −3i-3i−3i to 3i3i3i