Amy, Bob, and Cindy are partners with capital balances of $100,000, $60,000 and $80,000 and who share in the profit and loss of the ABC partnership 40%, 10%, and 50% respectively, when they agree to admit David for a 20% interest. If David contributes $70,000 to the partnership and the bonus method is used, what amount would be Cindy' capital balance after David joins?

$84,000 $91,000 $69,000 $76,000