The 4200 call option for December is at around Rs.16 and for January it is at Rs.105. The only problem with buying 4200 call in December is that you just have 3 days left to expiry so each day the time decay will be quite rapid. If you want to take a risk on buying Bajaj options, you can look to buy in the Jan contracts where you have more time available to you to get value on the call option.