Which of the Following Could Result in a Polyphenism

Multiple Choice

Which of the following could result in a polyphenism?

A) A mutation creates a deleterious version of an allele that is then passed on to an organism's offspring.
B) A change in an environmental cue switches the production of one phenotype to an alternate phenotype.
C) The cumulative action of multiple genes produces variation among individuals over a given range.
D) A combination of alleles on a single gene produces two or more discrete phenotypes in a population.