Do the relevant calculations so you can indicate which you prefer: a bank account that pays $5\%$ per year $($EAR$)$ for $3$ years or

a$)$ an account that pays $2\mathrm{.}5\%$ every $6$ months for $3$ years?

b$)$ an account that pays $7\mathrm{.}5\%$ every $18$ months for $3$ years?

c$)$ an account that pays $0\mathrm{.}5\%$ per month for $3$ years?