Which of the following commands is correct?

When we use the MaxCompute tunnel command to upload the log.txt file to the t_log table, the t_log is a partition table and the partitioning column is (p1 string, p2 string).

Which of the following commands is correct?
A . tunnel upload log.txt t_log/p1="b1”, p2="b2"
B . tunnel upload log.txt t_log/(p1="b1”, p2="b2")
C . tunnel upload log.txt t_log/p1="b1"/p2="b2"

Answer: A