A 7 year old boy presented with generalized edema.Urine examination revealed marked albuminuria.Serum biochemical examinations showedhypoalbuminaernia with hyperlipidaemia. Kidneybiopsy was undeaken. On light microscopicexamination, the kidney appeared normal. Electronmicroscopic examination is most likely to reveal:
Thin basement membrane
Fusion of foot processes of the glomerular epithelial cells
Rarefaction of glomerular basement membrane
Deposition of electron dense material in the basement membrane
Thin basement membrane