The average of five results is 45 and that of the first four is 45. The fifth result is? Select
A) 45	B) 88	C) 77	D) 66	E) 51
5 * 45 â€“ 4 * 45   = 45   45nswer: 45
<result>A</result>
The average of five results is 45 and that of the first four is 45. The fifth result is?