Neco 2019 Geography Question 28

The monthly average temperature (\(^{\circ}\text{C}\)) and rainfall (mm) of a region are given below:\n\n\begin{tabular}{lcc}\nMonth & Temp (\(^{\circ}\text{C}\)) & Rain (mm)\\\nJan & 28 & 120\\\nFeb & 30 & 110\\\nMar & 32 & 80\\\nApr & 34 & 60\\\nMay & 35 & 40\\\nJun & 33 & 20\\\nJul & 31 & 10\\\nAug & 30 & 15\\\nSep & 29 & 30\\\nOct & 28 & 70\\\nNov & 27 & 100\\\nDec & 26 & 130\\n\end{tabular}\n\nUsing the following rules, determine the Köppen climate classification (first two letters) for the region:\n- If every monthly mean temperature \(\ge 18^{\circ}\text{C}\), the climate is tropical (letter \(A\)).\n- The second letter is \(f\) if the driest month receives at least \(60\) mm of rain.\n- If the driest month receives less than \(60\) mm, compare the month of minimum rainfall with the high‑sun (April-September) and low‑sun (October-March) periods. Use \(s\) for a dry summer (minimum in high‑sun months) and \(w\) for a dry winter (minimum in low‑sun months).\nWhat is the appropriate two‑letter Köppen code?