Carol owns $40\%$ of Grizzly Corporation$$s outstanding stock. Her daughter Joy and son$-$in$-$law John each own $15\%.$ Joy is legally separated from John. Carol$$s father owns $30\%$ of Grizzly$$s outstanding stock. What is Joy$$s percentage of stock ownership under the attribution rules for stock redemption?

A$.$

$30\%$

B$.$

$55\%$

C$.$

$70\%$

D$.$

$100\%$