Select the correct interpretation of a mixed melting point analysis.

If the melting point of the mixture of compounds is less than $5C$ lower than the melting point of the standard, the unknown compound and standard are likely identical.

If the melting point of the mixture of compounds is within $2C$ of the melting point of the standard, the unknown compound and standard are likely identical.

If the melting point of the mixture of compounds is less than $5C$ higher than the melting point of the standard, the unknown compound and standard are likely identical.

If the melting point range of the mixture of compounds is less than $8C,$ the unknown compound and standard are likely identical.