The sugar dissolved the salt. The salt and sugar changed color. The sugar and the salt were unchanged. The salt and sugar formed a new material.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student mixed salt and sugar. Which statement describes the physical properties of salt and sugar after they were mixed?
Possibilities:
- The sugar dissolved the salt.
- The salt and sugar changed color.
- The sugar and the salt were unchanged.
- The salt and sugar formed a new material.

The sugar and the salt were unchanged.