What is TRUE about these declarations? Question $1$ options: a$)$ str$2[4]=\text{'}$x$\text{'}$ will succeed but str$1[0]=\text{'}$D$\text{'}$ will cause error d$)$ Modifying index positions in both strings is safe and allowed b$)$ Both str$2[2]=\text{'}$e$\text{'}$ and str$1[5]=\text{'}$x$\text{'}$ will cause runtime errors c$)$ str$1[3]=\text{'}$p$\text{'}$ will succeed but str$2[0]=\text{'}$C$\text{'}$ causes undefined behavior