If Consumers Demand More Genetically Engineered Foods,what Will Happen to the Value

If consumers demand more genetically engineered foods,what will happen to the value of genetic engineers' marginal product of labour

A) Price of the genetically engineered foods increases, therefore the value of marginal product of labour will rise.
B) Price of the genetically engineered foods decreases, therefore the value of marginal product of labour will fall.
C) Price of the genetically engineered foods increases, therefore the value of marginal product of labour will fall.
D) Price of the genetically engineered foods decreases, therefore the value of marginal product of labour will rise.