Harley Dickerson sells industrial paper products and eams a $4\%$ commission on all sales. Harley earns $a2\%$ bonus on sales that exceed $$40,000$ during a month. An additional $1\%$ bonus is carned on any sales that exceed $$90,000.$ Calculate Harley's commission for a month on sales of $$95,800.[10$ points$]$

a$.54,980$

b$.$ $$4,890$

c$.$ $$2,774$

d$.$ $$5,006$