Suppose there are the following scenarios. The most frequent query scenario is based on the mobile phone number to query the historical call records every month and every six months. Which of the following rowkey designs is the best?

The rowkey design of HBase table is a very important development and design link.

Suppose there are the following scenarios. The most frequent query scenario is based on the mobile phone number to query the historical call records every month and every six months. Which of the following rowkey designs is the best?
A . Name + mobile phone number
B . Date + mobile phone number
C . Mobile number + date
D . Mobile phone number + name

Answer: C