Which of the following is true about the chars variable?

char chars[] = "Hello World";

a) chars is an array of size 11, and the last value in the array is "d"

b) chars is an array of size 12, and the last value in the array is "d"

c) chars is an array of size 11, and the last value in the array is 0

d) chars is an array of size 12, and the last value in the array is 0