Consider the following statements regarding Binary Coded Decimal (BCD) and Gray Code:

1.In Binary Coded Decimal (BCD), each individual decimal digit of a base-10 number is represented separately by its own 4-bit binary sequence.

2.Gray code is a weighted number system, meaning each bit position holds a specific mathematical value like 1, 2, 4, or 8.

3.The primary advantage of Gray code is that only a single bit changes its state when transitioning from one number to the next sequential number.