Which from following on hydrolysis forms invert sugar?

The hydrolysis of sucrose yields an equimolar mixture of D-(+)-glucose and D-(-)-fructose, known as invert sugar due to the inversion of optical rotation from positive (sucrose) to negative (fructose).

The reaction proceeds as: $\text{Sucrose} + \text{H}_2\text{O} \xrightarrow{\text{H}^+ \text{ or invertase}} \text{D-(+)-Glucose} + \text{D-(-)-Fructose}$.

This confirms that sucrose hydrolysis produces invert sugar.

The correct identification is $\boxed{A}$.