In the Delivery Room, a 1-Hour-Old Baby Girl Is Assessed

In the delivery room, a 1-hour-old baby girl is assessed. Following an easy pregnancy, the baby was delivered at term through spontaneous vaginal delivery. The woman is in her second trimester of pregnancy and has no significant medical history. At 1 and 5 minutes, the Apgar scores were 9 and 9. The patient has been skin-to-skin with her mother and has successfully nursed once. An inspection reveals a rosy, alert baby. Cardiac auscultation demonstrates normal S1 and S2 with no murmurs, as well as normal femoral pulses. Which of the following hemodynamic alterations are most likely to be observed in this infant than before birth?

A) A
B) B
C) C
D) D
E) E