b
because your stop level is biggest of your order distance of market price
exp: if your stop level is 2 pip, you can not put your tp and stop loss under 2 pip even trilling stop
generally on above exp you can not put any order under 2 pip,if put under 2 pip you get error 130
use this indicator to find your broker stop level
if you need broker with 0 pip stop level
you can use FXTM
also you can search on net to find another one
but forget this type ea's for trading on live
broker's beat your account,and you can not understand how they beat your account
remember: if you want make money on market,they want play with money on market and always want find another victim