A text is made up of the characters a, b, c, d, e each occurring with the probability 0.12, 0.4, 0.15,0.08 and .25 respectively. The optimal coding tech-nique will have the average length of

A text is made up of the characters a, b, c, d, e each occurring with

1.	A text is made up of the characters a, b, c, d, e each occurring with the probability 0.12, 0.4, 0.15,0.08 and .25 respectively. The optimal coding tech-nique will have the average length of
A.	2.15
B.	3.78
C.	2.78
D.	1.78
Answer» B. 3.78