piano chord
Dsus2
D1E2A5
The third replaced by the second. Nothing in it decides between major and minor.
What is true of it
Dsus2 is D, E and A — 1, 2 and 5 counted from D.
These are also the notes of Asus4/D. Which name is right depends on what is underneath and what came before — the notes alone do not decide.