While determining the density of a metal block using a spring balance and a measuring cylinder, a student followed the following steps in his experiment. I. Noted the water level in the measuring cylinder without the metal block. II. Immersed the metal block centrally in water without touching the sides and centre of the bottom. III. Noted the water level in the measuring cylinder with the metal block inside it. IV. Removed the metal block from the water and immediately weighed it using a spring balance. The incorrect step in the procedure is a. I b. II c. III d. IV