Manufacturing costs that cannot be classified as either direct materials or direct labor are known as:a) period costs. b) nonmanufacturing costs. c) selling and administrative expenses. d) manufacturing overhead

d) manufacturing overhead

Explanation:

The term manufacturing cost comprise of direct material + direct labor + manufacturing overhead cost. It is the cost which is to be incurred to make a product.

In mathematically,

Manufacturing overhead cost = Direct material cost + direct labor cost + manufacturing overhead cost

Hence, the correct option is d. manufacturing overhead