Dime a Dozen Diamonds makes synthetic diamonds by treating carbon. Each diamond can be sold for $100. The materials cost for a standard diamond is $40. The fixed costs incurred each year for factory upkeep and administrative expenses are $200,000. The machinery costs $1 million and is depreciated straight-line over 10 years to a salvage value of zero. a) What is the accounting break-even level of sales in terms of the number of diamonds sold? Note: Do not round intermediate calculations. b) What is the NPV break-even level of sales assuming a tax rate of 21%, a 10-year project life, and a discount rate of 12%? Note: Do not round intermediate calculations. Round your answer up to the nearest whole unit.