K-4 Ballistic Missile

Current context: India has successfully test-fired the K-4 ballistic missile off the Vizag coast in Andhra Pradesh on 19th January 2020.

 

• The K-4 ballistic missile is a 3,500 kilometre range nuclear capable missile that can be launched from a submarine.
• The missile was developed by Defence Research and Development Organisation (DRDO).
• With this successful trial, India has moved one more step towards the induction of this ballistic missile on the INS Arihant class of nuclear submarines.
• Only the US, Russia and China have submarine-launched ballistic missiles of 3,500-kilometre range.
• K-4 is one of the two underwater missiles that are being developed by India for its submarine force and the other one is BO-5.
• The key features of the K-4 ballistic missile are:

1. The three-metre-tall missile carries a nuclear warhead of over one tonne.
2. It’s circular error of probability (the radius of the missile’s point of impact) that is also a measure of the efficacy of its guidance systems was 40 meters or less.
3. Capable to strike targets from stand-off ranges.
4. Launch platform‎: ‎Arihant class submarines
5. Operational range‎: ‎3,500 km (2,200 mi)

Question: 

Q.1 The operational range of the K-4 ballistic missile is ___________? 
a. 2000 km
b. 2500 km
c. 3000 km
d. 3500 km