The key of the right child below the root node of a search binary tree is 40. The value in the root node could be ____.

Bold, italic, and underline are examples of font ________

Fill in the blank(s) with correct word

The ________ function is a useful tool for detecting an error and displaying a more user friendly message

A) ISMISTAKE B) IFERROR C) IS ERROR D) IFMISTAKE