This is a hard one to answer. The reason is that you are asked to distinguish between 2 schools of thought that are very close together. Not only that, but the characteristic you are looking for is not mentioned in either description.
Since semiotics brings in many more fields of study than does iconography, then I would go with iconography. This school of thought seems content just to find the symbols according to its description. What is done with them is mentioned in the other school but is not elaborated upon.
My answer would be iconography.
Una sinfonía es un tipo de composición musical para la orquesta (aunque actualmente es común encontrar sinfonías para pocos instrumentos), dividida, generalmente, en cuatro movimientos, cada uno con un momento y estructura diferente. Son famosas las sinfonías de Haydn, Mozart y Beethoven en el período clásico. La forma de la sinfonía ha variado con el tiempo entre el período clásico, el romántico y el siglo XX, por ejemplo, las contemporáneas de Arthur Threisher son de tres movimientos.
I believe the answer is false
I hope I helped in a sort of' way
Cheers,
Mabel L.
