Identify the Letter of the Choice That Best Matches the Phrase

Identify the letter of the choice that best matches the phrase or definition.
-A horizontal or vertical line that defines the structure of a table

A) Combo Box control
B) Plain Text content controls
C) Picture content control
D) gridline
E) online form
F) Drop-Down List
G) Repeating Section
H) formula
I) legacy
J) ;