Determine the correct safe distance calculation $($Ds$)$ using the following formula and variables.

$Ds=(KT)+Dds+Z$

Actuator Control Reaction Time $=5ms$

Mechanical Response Time of Machine with Inertia Measured $=560ms$

Light Screen Response Time $=11ms$

Light Screen Detection Capability $=14mm$

No Additional Considerations to Calculate

$($NOTE: Dds is interchangeable with ddt$)$

a$.40\mathrm{.}23$ inches

b$.37\mathrm{.}23$ inches

c$.80$ inches

d$.60$ inches