whats the answer to this Which equations are true? Select all that apply.

A.
30
×
100
=
3
,
000
B.
30
×
10
3
=
30
,
000
C.
30
×
1
,
000
=
3
,
000
D.
30
×
10
4
=
3
,
000
,
000
E.
30
×
10
,
000
=
30
,
000