This table shows information about electromagnetic and mechanical waves.

Property:
Do they require a minimum?
How do they travel?
X

Electromagnetic:
No
Transverse waves
From varying electric and magnetic fields

Mechanical:
Yes
Longitudinal and transverse waves
From vibrating particles of the medium

Which question can be placed in the property column instead of the letter X?
(1 point)
A. How are they formed?
B. How does this wave transfer matter?
C. How long are the wavelengths of these waves?
D. How fast do these waves travel?

B. How does this wave transfer matter?