Help please!! will give brainliest, doing a test 50 points! Gina has created a banking database. She wants to index the Account Opened Date field. Why would she do that?

A.
to create a new record
B.
to decrease the overall search time
C.
to sort that field
D.
to create a link to another table.

Consider the series where in this problem you must attempt to use the ratio test to decide whether the series converges. compute enter the numerical value of the limit l if it converges, inf if it diverges to infinity, minf if it diverges to negative infinity, or div if it diverges but not to infinity or negative infinity.