Consider the following statements:

struct rectangleData

$\{$

float length;

float width;

float area:

float perimeter,

$.$

rectangleData bigRect,

Which of the following statements correctly intializes the element

length of bigRect:

a$.$ bigRect$=(10)$

b$.$ bigRect.length$=10$;

c$.$ length$[0]=10$;

d$.$ bigRect$[0]=10$