A point charge X (of unknown sign and magnitude) is attracted to positive point charges but feels no force from negative point charges. What kind of

A point charge X (of unknown sign and magnitude) is attracted to positive point charges but feels no force from negative point charges. What kind of charge does X have?

A) None (X is neutral)

B) More information is needed: X could be either positive or negative

C) Negative

B) No such object X exist

E) Positive

Please explain