Some phrases (a), (b), (c) and (d) are given below. With which word the bold letter in sentence should be replaced the phrase to make the sentence grammatically meaningful and correct. If the sentence is

grammatically correct and there is no correction required mark (e) as the answer.

Question- The supermarkets are falling at themselves to attract customers to their shops.

(a) falling around (b) falling about (c) falling on (d) falling over (e) No improvement