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
The default operation for Search and Replace String has always felt backwards to me. I would prefer if it did all occurances by default, rather than just the first.
It takes some brain work to remember all of the default values and inputs for different VI functions. If the replace all is default true, then the answer would be c.