Following a chase strategy, how many employees would be needed in the month of July in the following scenario?

$\backslash$table$[[$Parameter$,$June,July,August,September,October$],[$Beginning inventory,$1,000,,,,],[$Target days,$10,15,12,15,10],[$Working days,$25,24,26,24,26],[$Sales plan,$2,500,3,000,2,250,2,750,2,500],[$Employee productivity $($units$/$day$),2,2,2,2,2],[$Planned production,,,,,$],[$Ending inventory,,,,,$],[$Number of employees,,,,,$]]$

a$.45$

b$.50$

c$.55$

d$.60$