During severe braking on dry asphalt, a driver complains of a rapid pulsing sensation in the brake pedal. A diagnostic scan reveals no ABS codes. What should the technician conclude?

1. The ABS modulator control block has failed and must be replaced immediately
2. The pedal pulsing is normal ABS operation as the system prevents wheel lockup
3. The front brake pads are worn down to their metal backing plates
4. The brake master cylinder has an internal fluid bypass leak