What scale does Eric Clapton use in Had to Cry Today?

The scale that Eric Clapton uses in Had to Cry Today is the A Dorian scale. The A Dorian scale is a heptatonic scale constructed using the following intervals: whole step, whole step, half step, whole step, whole step, whole step, half step. The formula for the A Dorian scale is: A, B, C, D, E, F#, G.