When two heterozygous parents are crossed in a dihybrid cross, what fraction of offspring will be homozygous recessive?

A. 8/16
B. 1/16
C. 2/16
D. 4/16

Also how long does it take to mark as brainliest/how do you do it?
I have done it before but I'm not on here frequently and can't remember how to do it.