The correct answer is: B. A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine.
FORTRAN is a high-level language that was developed in the early 1950s. It is one of the oldest programming languages still in use today. FORTRAN is a general-purpose language, which means that it can be used to write programs for a variety of tasks. However, it is most commonly used for scientific and engineering applications.
One of the advantages of FORTRAN is that it is a very portable language. This means that a FORTRAN program written for one computer can usually be compiled and run on another computer with little or no modification. This is because FORTRAN programs are written in a way that is independent of the specific hardware and operating system on which they are to be run.
However, there are some differences between the way that FORTRAN programs are written for different platforms. For example, the way that variables are declared and the way that input and output are handled may vary from platform to platform. These differences are usually minor, but they can make it necessary to make some changes to a FORTRAN program when it is ported to a new platform.
In conclusion, the statement “A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine” is not true. While there are some differences between the way that FORTRAN programs are written for different platforms, these differences are usually minor and do not prevent FORTRAN from being a portable language.