PAT question

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its A.

D implies that the longest one is in the middle.
but from the end view you can see that the longest one is on the end.

the two are offset and that is an important factor. its subtle, but vital.
 
Its A for sure (althought I had to stare very carefully at the screen close-up to see the difference between A and B)

A vs D the difference is the cylinders. Look at their position
 
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