To solve this problem, let's analyze each statement separately.$\\$Statement A:$\\$• A solar cell is a type of photovoltaic cell that converts light into electricity.$\\$• In the I-V characteristics of a solar cell, the current is generated by the cell itself,$\\$ so it operates in the fourth quadrant (IV) of the I-V graph, where current is positive$\\$ and voltage is negative.$\\$• Therefore, statement A is correct.$\\$Statement B:$\\$• In a reverse-biased pn junction diode, the current is primarily due to minority charge carriers,$\\$ not majority charge carriers.$\\$• The reverse current is typically very small and is measured in microamperes (\mu A).$\\$• Therefore, statement B is incorrect.$\\$Conclusion:$\\$• Statement A is correct but statement B is incorrect.$\\$• This corresponds to Option 3.$\\$Thus, the correct answer is Option 3: A is correct but B is incorrect.