I have to admit, my first inclination was C. But the answer is really B. The interpolate does not go outside of the range of the original array, so you won't get 4.25 for the last iteration, you get 4. Very sneaky of you Steve.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5
santoshsss, I highly recommend you start going through the LabVIEW help. Give this function a serach and read what it does.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5