Which Words

Which is the correct meaning for these words?

1 ORPHREY

(a) A large fish eating hawk

(b) An ornamental band or border

(c) A perennial bearing purplish flowers

2 PERFIDIOUS

(a) Hard to please

(b) Indifferent

(c) Treacherous

3 SCORIA

(a) The refuse left after smelting

(b) The eighth sign of the Zodiac

(c) Pollen collecting hairs on an insect’s legs