A 32-years-old woman is worried about a headache, aching pains in the heart apex. Within two weeks of observation the BP has been ranging from 135/85 mm Hg to 170/100 mmHg. The heart borders are not changed, the loud S II is over the 2-nd auscultation point. What is your diagnostic assumption? A.II stage essential hypertension B.Pre-hypertension C.Reno-parenchymatous arterial hypertension D.I stage essential hypertension E.III stage essential hypertension