Key Of D natural minor...
Key of:    D natural minor  (minor)

        7 Tones in key:               D, E, F, G, A, Bb, C        (i, iidim, IIII, iv, iv, VI, VII)
        3 Primary Chords:          Dm, Gm, Am                    (i, iv, iv)
        3 Secondary Chords:      F, Bb, C                           (III, VI,VII)
        Dominant 7th Chord:      A7                                    (V7)
  Danman says..."Check out the chart"...D natural minor
  Scale Step      Root     3rd    5th   Chord Type
         I         D      F     A   Minor
        II        E      G     Bb   Diminished
        III        F      A     C   Major
        IV       G      Bb     D   Minor
        V       A       C     E   Minor
       VI      Bb      D     F   Major
       VII      C      E     G   Major