In the question given below, three statements are given which may or may not contain and error in any part of the sentence. Identify the statements containing an error and also point out the part containing the error

1. Neither his grandparents (A)/ nor he are going (B)/ to his house (C)/ next month.(D)

2. The maximum altitude (A)/ of the Himalayan mountain (B)/ range is significantly (C)/ greater than the Alps (D)

3. Rajasthan is one of the most popular tourist (A)/ destinations to observe Indian heritage (B)/ and royalty closely. A fortnight should suffice to (C)/ be able to glimpse the splendor of the state. (D)