Inside the kidney there are two zones, an ___________ (A) and an ___________ (B). The medulla is divided into a few conical masses ________________ (C) projecting into the ________________ . The cortex extends in between the medullary pyramids as ________________ (E).

Question

( a ) outer cortex and inner medulla; medullary pyramids, renal columns; calyces
( b ) inner cortex and outer medulla; renal columns, calyces; medullary pyramids
( c ) inner cortex and outer medulla; renal columns, medullary pyramids; calyces
( d ) outer cortex and inner medulla; medullary pyramids, calyces; renal columns