Option 1 -> GDP = Sum of all factor incomes (wages + profits) from both firms.
Option 2 -> This incorrectly adds only some components, missing the total contribution.
Option 3 -> This represents only Firm A's contribution (20+30=50).
Option 4 -> This represents only Firm B's contribution (60+90=150).
Hence, Option 1: Rs. 200 -> Using the income approach, GDP = Total wages + Total profits. Firm A contributes (20+30) = Rs. 50 and Firm B contributes (60+90) = Rs. 150. Therefore, GDP = 50 + 150 = Rs. 200. The income approach sums all factor incomes (wages, profits, rent, interest) earned in the production process, which equals the total value of output produced in the economy. -> correct