A test cross is made to check the genotype of a trait, which of the following crosses is a test cross?

A test cross is made to check the genotype of a trait, which of the following crosses is a test cross?

کسی خاصیت کے جین ٹائپ کو جانچنے کے لیے ٹیسٹ کراس بنایا جاتا ہے، مندرجہ ذیل میں سے کون سا کراس ٹیسٹ کراس ہے؟
Explanation

The cross of an organism with an unknown dominant genotype with an organism that is homozygous recessive for that trait is called a test cross.