Correct Answer: (d) None of the above
Solution:Varieties given in the options i.e., Dasheri-1, Chausa and Langra are not regular crop varieties. Dasheri-51 is a variety of Mango which is a regular crop, while other varieties of Mango which are regular crop are as follows - Bengalora (Totapuri), Neelam, Amrapali, etc.