When two or more people participate in a heated or hostile interaction in an online forum, this is known as a fire war

There is a ____ between the a element and each pseudo-class selector.

A. period B. hyphen C. comma D. colon

Consider the use of unclustered B + trees for external sorting. Let R denote the number of data records per disk block, and let F be the number of blocks in the data ?le. Estimate the cost of such a sorting procedure as a function of R and F. Compare this cost to merge-based external sorting. Consider the cases of R = 1, 10, and 100.

What will be an ideal response?