Recall that in a 32-bit processor, the bit positions are indexed from 0 (least significant bit) to 31 (most significant bit). When does the C function

int f(unsigned int x){

return (x & 0x55555555) != 0;

}

return 1?

	A.	Any odd bit of x is 1.
	B.	All the odd bits of x are ones.
	C.	All the even bits of x are ones.
	D.	Any even bit of x is 1.