Genetics Question: What are the genotypes of the parents?

In the garden, Phlox white flower color is due to a dominant gene, W, and cream to its recessive allele, w. Salver-shaped flowers are due to a dominant gene, S, and funnel-shaped flowers to its recessive allele, s. A plant producing white funnel-shaped flowers is crossed to one producing cream slaver-shaped flowers. Of the offspring, one quarter produced white salver-shaped flowers, one quarter produced white funnel-shaped flowers, one quarter produced cream salver-shaped flowers, and one quarter produced cream funnel-shaped flowers. What were the genotypes of the parents?