Which of the following statements is true about firms in a perfectly competitive market?

Group of answer choices

A. Firms spend significantly on advertising to draw customers away from competitors.

B. Firms are price takers.

C. Firms follow competitors' behaviors closely.

D. Firms face a horizontal demand curve.

E. Statements B. and D. are both correct.

F. Statements A, B, C, and D are all correct..