A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD? 1. DVD supports Standard Definition video while BD supports High Definition video. 2. Compared to a DVD, the BD format has several times more storage capacity. 3. Thickness of BD is 2.4 mm while that of DVD is 1.2 mm. Which of the statements given above is/are correct?

1. Statement 1 is correct: DVD (Digital Versatile Disc) technology was primarily designed for Standard Definition (SD) video, while Blu-ray Disc (BD) was developed specifically to store and play back High Definition (HD) video. 2. Statement 2 is correct: BD format offers significantly higher storage capacity compared to a DVD. A single-layer BD can hold about 25 GB and a dual-layer about 50 GB, whereas a standard single-layer DVD holds 4.7 GB and a dual-layer holds 8.5 GB. Thus, BD has several times more storage capacity. 3. Statement 3 is incorrect: Both BD and DVD discs have the same standard thickness of 1.2 mm. The difference lies in the thickness of the protective layer above the data layer (0.1 mm for BD vs 0.6 mm for DVD), not the overall disc thickness.