A solution of Sulphuric Acid in water exhibits: 

Raoult's law states that the partial vapor pressure of a component in an ideal mixture is equal to the vapor pressure of a pure component multiplied by a partial fraction. An ideal mix has the interactions between two components A and B (A-A, B-B, A-B) in equal amounts. When the A-B interaction is strong than the other two, the vapor pressure decreases from the calculated value. Thus a negative deviation is taking place. 

Sulphuric acid quickly dissolves in the solution when added to the water together with a small number of the polar water molecules. Due to the speed and clarity of the dissolving, the interaction between the newly created ions (ions of sulfuric acid and water) is now stronger than the interaction between the sulfuric acid ions.
In order to evaporate the molecules, more heat is required since the connections produced are far too strong. As a result, the solution's vapor pressure significantly decreases. Raoult's law deviates when the change in vapor pressure results from a change in the strength of the contact. Since the interaction between sulphuric acid and a water molecule is very strong, a negative deviation is observed.

Hence, option A is correct.