Consider the following statements : 1. Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent. 2. A person’s genome can be edited before birth at the early embryonic stage. 3. Human induced pluripotent stem cells can be injected into the embryo of a pig. Which of the statements given above is/are correct ?

1. (a)1 only
2. (b)2 and 3 only
3. (c)2 only
4. (d)1, 2 and 3