A 23 year-old female presents at 16 weeks into her first pregnancy with a blood pressure of 144/96mmHg. A 24 hour urine collection reveals a protein excretion of 1.7g/ d. What is the most likely explanation for these findings
A: Normal changes of pregnancy
B: Gestational hypertension
C: Essential hypertension
D: Pre-eclampsia
E: Hypertension secondary to chronic glomerulonephritis