Identify the Default Flex Value That Spontaneously Sets the Size

Multiple Choice

Identify the default flex value that spontaneously sets the size of a flex item to match its content or the value of its width and height property.

A) ​flex: 0 1 initial;
B) ​flex: 0 1 none;
C) ​flex: 0 1 inherit;
D) ​flex: 0 1 auto;