Which equation represents the transformed function below?

On a coordinate plane, a parent function starts at (0, negative 1) and then curves up into quadrant 1 and approaches y = 1. A transformed function starts at (0, 4) and then curves up into quadrant 1 and approaches y = 6.

= parent function; y = log x
- - - - - = transformed function
y = log x + 5
y = log x minus 5
y = log (x + 5)
y = log (x minus 5)