If m $($the number of compounding periods per year$)$ is less than one, then

a$.$

Effective rate per annum $<$ Nominal rate per annum

b$.$

None of the available options

c$.$

Effective rate per annum $=$ Nominal rate per annum

d$.$

All of the available options

e$.$

Effective rate per annum $>$ Nominal rate per annum