What is the impact $($increase$,$ decrease, or no change$)$ on the overall strength of concrete when the following admixtures are added?

$($a$)$ Air entrainers

$($b$)$ Water reducer

$($c$)$ Retarder

$($d$)$ Hydration controller

$($e$)$ Accelerator

Air Entrained

A$.$ Decrease

Water Reducer

B$.$ Increase

Retarder

C$.$ Decrease

Hydration Controller

D$.$ No Change

Accelerators

E$.$ No Change but increase rate of strength gain