What does the warning 'glutInitWindowSize' is deprecated: first deprecated in macOS 10.9 - OpenGL API deprecated. (define GL_SILENCE_DEPRECATION to silence these warnings) [-Wdeprecated-declarations] indicate?
a) The function glutInitWindowSize is no longer supported in macOS 10.9 and later versions.
b) The OpenGL API is deprecated in macOS 10.9 and later versions.
c) The compiler is warning about the use of deprecated declarations related to OpenGL.
d) GL_SILENCE_DEPRECATION can be defined to suppress these specific warnings about deprecated declarations.
