What is the location, orientation, size, and type of the object in a concave mirror when it is located at the focal point (F)?
1) L: At the focal point (F), O: Inverted, S: Smaller, T: Virtual
2) L: At the focal point (F), O: Upright, S: Same size, T: Real
3) L: At the focal point (F), O: Inverted, S: Same size, T: Real
4) L: At the focal point (F), O: Upright, S: Smaller, T: Virtual