Well seing an A chord a D chord and a E chord, I would use a major pentatonic scale (1.2.3.5.6) should work on this progression the only thing is the C# note of the pentatonic which would clash with the C major chord
Guitars:
1978 Fender Telecaster Thinline Custom USA, New Nash TL-72 Thinline Telecaster, 1965 Harmony Meteor, H71, 1986 Fender Telecaster Esquire MIJ, New Martin J-41 Special, 1933 National Duolian, 1941, New Eastwood Mandocaster 12 strings
Amps:
Tweed Vibrolux Custom Denis Manlay, 1976 Fender Deluxe Reverb Silverface