Identify the correct code for Assertion A and Reason R on the basis of the code given below:Assertion A: Niger Delta of Nigeria has rich oil reserves but Nigeria is struck with numerous problems of environmental hazards and environmental injustice.Reason R: According to World Bank only one percent of the oil revenues actually reach the population due to misdistribution and corruption.Codes:

• A. A is correct, but R is not the right explanation.
• B. A is correct and R is the right explanation.
• C. Both A and R are incorrect.
• D. R is correct, but A is not correct.