The table below shows the number of foot bones in some horse fossils. Horse Fossil Record Horse Fossil Number of Foot Bones
P 19
Q 17
R 24
S 13

Ancient horses had more bones in their foot then present-day horses. The present-day horse has 11 foot bones. What is the correct order of evolution of the horse starting from the youngest fossil?
Group of answer choices
R P Q S
Q P R S
S R P Q
S Q P R