Based on Mrs. Millson's observation notes and Ms. Taylors' comments about pacing lessons, which of the following suggestions is best for Mrs. Millson to offer her? "It's okay if you get behind a little. You can spiral the concepts into later lessons." "When planning your lessons, assign specific amounts of time to each part of the lesson then use a timer to adhere to the times." "Before starting each segment of the lesson, tell the students how long the segment will last." "Review the pacing guide to understand how many days of review time are built in. Use those days when you fall behind on lessons