Hey aspirant,

According to me, I guess you should go only with that specialization in which you are interested because of course you won't want to waste your four years studying a stream in which you are not at all interested.

But now, as per the trend and scope I can suggest you to opt for the block chain technology, as this is the best field and also have good scope in this.

But as I have said earlier it's totally upto you!

All the best!