which of the following is true about the structure of the kidneys
A. bean, 4 to 5 inches long and 2 to 3 inches wide
B. oblong, 1 to 2 inches long and 2 to 3 inches wide
C. heart-shape, 3 to 4 inches long Ang 2 to 5 inches wide
D. round-shape, 4 to 5 inches long and 2 to 3 inches wide​