Which of the following reserves the first column in a three row grid for the nav element?
◦ nav { grid-row: 1 / 4; grid-column: 1 / 2; }
◦ nav { grid-column: 1 / 3; grid-row: 1 / 4; }
◦ nav { grid-template-row: 3; grid-template-column: 1; }
◦ nav { row: all; column: 1; }