#4 is also platform dependent. Longs are 32 bits on Windows(both 32 and 64), but are 32 for Linux 32-bit and 64 for Linux 64-bit. So the answer could be B or

#4 is also platform dependent. Longs are 32 bits on Windows(both 32 and 64), but are 32 for Linux 32-bit and 64 for Linux 64-bit. So the answer could be B or C there.