ased on the table of the data which of the four businesses appears to be suffering from diseconomies of scale?

Index Base: Last year $=100$

Business A

Business B

Business C

Business D

Index of production this year

$150$

$90$

$100$

$120$

Index of unit cost this year

$80$

$95$

$96$

$130$

a$.$

Business D

b$.$

Business B

c$.$

Business C

d$.$

Business A