The average revenues of 7 consecutive years of a company is Rs. 75 lakhs. If the average of first 4 years is Rs. 70 lakhs and that of last 4 years is Rs. 82 lakhs, what will be the revenue for the 4th year ?

• A. Rs. 85 lakhs
• B. Rs. 83 lakhs
• C. Rs. 81 lakhs
• D. Rs. 79 lakhs