Is It Possible to Have Different Theories on the Same

Multiple Choice

Is it possible to have different theories on the same topic?

A) no, it is impossible to have alternative theories on a topic
B) yes, there are often many alternative theories on a topic because there are usually many possible explanations and/or solutions
C) yes, but there is usually only one explanation and/or solution
D) no, there can only ever be one explanation or solution