Greg Created a Table with Four Columns and Four Rows

Multiple Choice

Greg created a table with four columns and four rows. He wants to insert a heading in the first row that spans all four columns. Which of the following should he do?

A) Split the cells in row 1.
B) Change to a style that uses a header row.
C) Insert a new row at the top of the table.
D) Merge the cells in row 1.