Match the third order linear equations with their fundamental solution sets.

1. yyy+y=0 2. y7y+12y=0 3. y4y+y4y=0 4. y+y=0 5. y+3y+3y+y=0

A. {1,e^4t,e^3t} B. {e^(t),te^(t),t^(2)e^(t)} C. {1,cos(t),sin(t)} D. {e^(t),te^(t),e^(t)} E. {e^(4t),cos(t),sin(t)}