What is total contribution margin if sales volume increases by $40\%?$

A$.$ $$210,000$

B$.$ $$21,000$

C$.$ $$150,000$

D$.$ $$49,000$

$20.$ Sabv Corporation's break$-$even$-$point in sales is $$850,000,$ and its variable expenses are $80\%$ of sales. If the company lost $$35,000$ last year, sales must have amounted to:

A$.$ $$815,000$

B$.$ $$645,000$

C$.$ $$780,000$

D$.$ $$675,000$