Passing the correct type parameter to MethodInfo GetMethod

I know I could use a technique like in this question to get my method but I want to shortcut that process.

I'm looking for Enumerable.FirstOrDefault Method (IEnumerable)

I've tried both

var enumerableType = typeof(IEnumerable<>).MakeGenericType(typeof(string));
MethodInfo firstMethod = typeof(Enumerable)
.GetMethod("FirstOrDefault", new Type[] { enumerableType });

and

MethodInfo firstMethod = typeof(Enumerable)
.GetMethod("FirstOrDefault", Type.EmptyTypes);

But both return null.

What would be the correct approach?