Good question, surajalok@,
This one is an Equivalent Elements situation (or "parallelism" situation). The sentence is linking "do not have" with another element "are not likely to have", and those two elements need to be in parallel form. Most importantly they each need a verb, so as I was reading the original I was looking for a form of the word "are" ("likely" is an adverb, so it needs to modify a verb, but even without that technical description you should recognize that you have two equivalent situations that need to be parallel).
The only choice that does this matches the verb "have" with the verb "are", so the correct answer is "nor are they" (likely to have...).
Great question - keep them coming!