Which of the following statements about the C programming language is false?

A$)$ With careful design, it's possible to write C programs that are portable to most computers.

B$)$ C was implemented in $1972$ by Dennis Ritchie at Bell Laboratories.

C$)$ Cinitially became widely known as the Windows operating system's development language.

D$)$ Today, most of the code for general$-$purpose operating systems is written in $C$ or $C++.$