Write a program called myecho that prints its command-line arguments and environment variables. For example Part A What should be in line 3? linux> /myecho arg1 arg2 Command-ine arguments argvI 0] myecho argvl 1]: arg1 argvl 21 arg2 Environment variables envp[ 0]: PWDlusr0/droh/ics/code/ecf envpl 1]: TERM-emacs O int argc, char argvll, char *envpl O int argc, char argv, charxenvpl O int *argc, char *argvl, char envpl O int argc, char argv, char envp envp[251: USER-droh envp[26]. SHELL=/usr/local/bin/tcsh envp[27]: HOME/usrO/droh Submit Request Answer Fill in the missing parts of the code below Part B 1nclude "csapp.h" 2 3 int main(...) 4 What should be in line 8 int i O FI , argv[i]NULL; i++ i=0, argv[i] i=0, argv[i] != NULL; i += 2 6 printf("Command-line arguments:ln") for (..) O NULL; i++ printf(...), 10 printf("In"); printf("Environment variables:In") for ) 12 13 15 17 printf...) Submit equest Answer exit(0)