Last month, when $10,000$ units of a product were manufactured, the cost per unit was $$60.$ At this level of activity, variable costs are $50\%$ of total unit costs. If $10,500$ units are manufactured next month and cost behaviour patterns remain unchanged, the total cost of goods manufactured will be$?$

Multiple Choice

$$585,000.$

$$600,000.$

$$615,000.$

$$630,000.$