During Spontaneous Breathing,the Fall in Intrapleural Pressure That Draws Air

Multiple Choice

During spontaneous breathing,the fall in intrapleural pressure that draws air into the lungs during inspiration also draws blood into the major thoracic vessels.This phenomenon increases which of the following?

A) Systemic vascular resistance
B) Right ventricular afterload
C) Right ventricular preload
D) Pulmonary capillary resistance