Pushing down selections in a query can affect the set of tuples that are produced by the query. Discuss or explain how the manipulation of selections influences query results.
A. 5.4 x 10⁻⁷ s⁻¹
B. 6.1 x 10⁷ s⁻¹
C. 1.9 x 10¹⁵ s⁻¹
D. 2.2 x 10²² s⁻¹