In a dihybrid cross, if two heterozygotes (for both genes) are crossed, what will be the expected phenotypic ratios? (In the following order: dominant for both traits; dominant for the first trait and recessive for the second; recessive for the first trait and dominant for the second; recessive for both traits.) Group of answer choices

6:6:3:1

4:4:4:4

9:3:3:1

1:2:2:1