It is D because that is what my friend said
decrease
Shortage<span> is a situation in which quantity demanded is greater than quantity supplied.</span>
When quantity supplied is equal to quantity demanded, it is called equilibrium of demand. Both supply and demand are equal.
<span>When quantity supplied is greater than quantity demanded, it is called surplus. Excess supply of goods are called surplus.</span>
When solid ice gains heat, it changes state from solid ice to liquid water in a process called melting. Ice cubes in a cold drink, for example, gradually melt. ... When water absorbs enough heat, it becomes a gas (water vapor). This process is called evaporation.