Consider the following characteristics of the new Google self-driving car:

1. It runs on batteries and petrol.
2. It can be used in extreme weather conditions.
3. It has a design which requires further modifications.
4. It can reach the speed of 25 miles per hour.
   Mark the correct alternative.
   a) Only 1 is correct.
   b) Only 1 and 4 are correct.
   c) Only 3 and 4 are correct.
   d) Only 1, 2 and 3 are correct.
   e) Only 2, 3 and 4 are correct.