If it were to have experimental observation as part of the process, your answer would be B. If not supported by an experimental observation it would remain as just a hypothesis.
A scientific method provides a systematic approach to answer and explain any natural phenomenon through various steps.
A hypothesis is proposed which tested through the experiments which provide relevant data to support the hypothesis. If the hypothesis is proved which describes natural phenomenon it could be considered a "scientific theory' which explains the natural phenomenon in depth.
