A nurse is assessing a 6-month-old infant to determine readiness for starting solid foods. Which of the following signs indicate(s) that the infant is ready to begin eating solid foods? (Select all that apply.)

A. The pincer grasp develops around 9-12 months and is not necessary for starting solid foods at 6 months. B. Showing interest in food when others are eating is a sign of readiness for solid foods, indicating curiosity and a desire to try new foods. C. Doubling birth weight is a milestone often associated with physical readiness to begin solid foods. D. Losing the tongue-thrust reflex, which pushes food out of the mouth, is an important sign of readiness for solid foods. E. Drinking from a cup without spilling is a more advanced skill and not required for starting solids. F. Being able to sit up with minimal support indicates the infant can maintain a stable position for eating.