Which Step in Urine Formation Occurs as Molecules and Ions

Multiple Choice

Which step in urine formation occurs as molecules and ions are both passively and actively moved from the nephron into the blood of the peritubular capillary network?

A) glomerular filtration
B) tubular reabsorption
C) creatinine production
D) tubular secretion
E) filtration of small molecules into glomerular filtrate