Fix the following flawed method printLetters, which accepts a String as its parameter and attempts to print the letters of the String, separated by dashes

a$)$ s$.$substring $(0,5)==$ "Eodoa"

b $)$ s$.$lastIndexOf $("$od$")$

c$)$ s$.$indexOf $(\text{'}$o$\text{'},5)$

d$)$ s$.$indexOf $(\text{'}"$av$",$ s$.$length $()-10)$

e$)$ s$.$ substring $($s$.$lastIndexOf $($s$.$charAt$(5)))$

f$)$ s$.$ substring $(2,$ s$.$length $()-3)$