To receive command line arguments at run$-$time, which of the following options represents the correct way to define the main function?

a$)$ int main$($int$*$ argc, char argv$)$

b$)$ int main$($int argc$[],$ char$*$ argv$)$

c$)$ int main$($int argc, char argv$[])$

d$)$int main$($int argc, char$*$ argv$[])$