Step 1: Plan
The first telecast date decides the order. We write each serial with its starting year and then arrange the list.
Step 2: Collect the dates
Karamchand began in 1985. Nukkad followed in 1986. Fauji came two years later in 1988. Udaan was the last, in 1989.
Step 3: Build the sequence
Reading the years from smallest to largest gives Karamchand, Nukkad, Fauji, Udaan. In the letters of the question this is D, B, C, A.
Step 4: Match the sequence with an option
Only option 2 reads D, B, C, A.
Step 5: Why the others fail
Option 1 starts with Udaan, which was last. Option 3 starts with Nukkad and puts Udaan second, which breaks the order. Option 4 starts with Fauji, which came after Karamchand and Nukkad.
Step 6: Recheck the gaps in time
The gaps are one year from 1985 to 1986, two years from 1986 to 1988, and one year from 1988 to 1989. These gaps are all positive, so the order D, B, C, A never goes backward in time. Any other arrangement would put a later year before an earlier one. So option 2 is confirmed.
Final Answer:
Option 2 gives the true order of the first telecasts.
\[\boxed{\text{(2)}}\]