Which statements are true about the Golden Ratio?

Question

Consider the following statements regarding Golden Ratio for positive integers

1. It is the ratio of difference of two numbers and the smaller number
2. It is the ratio of sum of two numbers and the smaller number
3. It is the ratio of the sum of two numbers and the larger number

Which of the above statements is/are correct?

1. 1,2 and 3
2. 3 only
3. 2 only
4. 1 only