A manufacturing firm is seeking to enhance its plant floor operations with a network system capable of managing large$-$scale, real$-$time processes. Given the goal of managing large$-$scale operations in real$-$time, which type of network infrastructure will BEST fit the firm$$s operational and security needs?

A$.$ Hybrid cloud infrastructure

B$.$ Air$-$gapped infrastructure

C$.$ SDN infrastructure

D$.$ ICS$/$SCADA infrastructure