Given the BinaryTree Class (Partially Shown Below), Select an Expression

question 44

Multiple Choice

Given the BinaryTree class (partially shown below) , select an expression to complete the static recursive helper method countLeaves, which returns the number of leaf nodes in the binary tree rooted at node n.

• A)n.right == null
• B)n.left == null || n.right == null
• C)n.left == null
• D)n.left == null && n.right == null

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Definitions:

Hiring And Training Cost

Expenses associated with recruiting new employees and providing them with the necessary training to perform their job.

Labor Hours

The total number of hours worked by employees during a certain period, often used to measure productivity.

Inventory Holding Cost

Inventory holding cost refers to the total expenses associated with storing unsold goods, including warehousing, insurance, depreciation, spoilage, and opportunity costs.

Marginal Subcontracting Cost

The additional cost incurred for producing one more unit of a product through subcontracting.