Q$7)$ IN C PROGRAMMING

Assume string$1$ is a character array. Which of the following operations is not a correct way to define string $1?$

A$)$ string $1[]=$ "test";

B$)$ string $1[]\text{'}$t$\text{'},\text{'}$e$\text{'},\text{'}$s$\text{'},\text{'}$t$\text{'},\text{'}\backslash 0\text{'}\}$;

C$)$ string $1[]\text{'}$t$\text{'},\text{'}$e$\text{'},\text{'}$s$\text{'},\text{'}$t$\text{'}$