4 歲小男孩出現 nephrotic syndrome，光學顯微鏡下腎臟組織沒有明顯病變，螢光檢查亦無免疫沉積物，下列腎小球的變化，何者最合乎此病例的表現？
Thin basement membrane
Splitting and lamination of basement membrane
Effacement of podocyte foot processes
Nonbranching thin fibrillary deposition
