Assume Carl and Wanda each make 40,000. Each was given a raise of 4,000. Carl’s spending increased from 40,000 to 43,000. Wandas savings increased from 1,000 to 2,000.

Ais correct according to edgenuity

Psychologists often talk of the magical number "7" - so it is generally assumed that we can keep 7 (more or less, so 5-9 is the correct answer) items in our short term memory - we know this as a result of many experiments.

we can increase this by chunking, so for example "7 8 9 5 3" is harder to remember than "78 95 3" - try it yourself!

the answer is a)