What is the correct order of λmax for π –> π* transition for the following three compounds?

What is the correct order of λmax for π –> π* transition for the

1.	What is the correct order of λmax for π –> π* transition for the following three compounds?
A.	R-C=C-R > R2C = CR2 > R-CHO
B.	R-C=C-R < R2C = CR2 < R-CHO
C.	R-C=C-R = R2C = CR2 = R-CHO
D.	R-C=C-R < R2C = CR2 >R-CHO
Answer» C. R-C=C-R = R2C = CR2 = R-CHO

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What is the correct order of λmax for π –> π* transition for the following three compounds?

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