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Consider the following statements on Public Sector Undertakings:

1. National Hydroelectric Power Corporation Ltd (NHPC) is listed with the Bombay Stock Exchange and National Stock Exchange.

2. National Thermal Power Corporation Limited (NTPC) is the nodal agency for implementation of Rajiv Gandhi Grameen Vidyutikaran Yojana.

3. Satluj Jal Vidyut Nigam Limited (SJVN) is a "Schedule-A" Nav Ratna company.

4. National Power Training Institute (NPTI) is committed to the development of human resources in power sector for the past four decades.

Select the correct answer using the code given below:

A)  1 and 4 only

B)  2 and 3 only

C)  2, 3 and 4 only

D)         1, 2, 3 and 4