✅ The verified answer to this question is available below. Our community-reviewed solutions help you understand the material better.
string[] w = { "ALpha","beta","ALGO","apple" };
var res = w.GroupBy(s => s.StartsWith("A", StringComparison.OrdinalIgnoreCase))
.First(g => g.Key)
.OrderByDescending(s => s.Length);
]]>