Match List I with List II.
| List I | List II |
|---|---|
| A. Two or more alternative forms of a gene | I. Back cross |
| B. Cross of progeny with homozygous recessive parent | II. Ploidy |
| C. Cross of progeny with any of the parents | III. Allele |
| D. Number of chromosome sets in a plant | IV. Test cross |
Choose the correct answer from the options given below: