water boils at 100 degrees celsius and pure ethanol at 78 degrees celsius which of the statements are true about water and ethanol ? water and ethanol________ .
I. A PURE SUBSTANCES
II. CAN BE BOLD AT EITHER 100 DEGREES CELSIUS OR 78 DEGREES CELSIUS
III. HAVE SPECIFIC TEMPERATURES AT WHICH THEY WOULD START TO BOIL
IV. CAN BE IDENTIFIED ACCORDING TO THE TEMPERATURE AT WHICH THEY BOIL

A. 1 2 AND 3
B. 1 2 AND 4
C. 2 3 AND 4
D. 1 3 AND 4​