Service tax applicability ?

Dear Experts, Can you please help me with the awnser for the below mentioned query:

Mr. A is having a beauty salon business and his turnover is 5 lacs P.A. Further, Mr. A is also a partner in a partnership firm with Mr. B running another beauty salon (Mr. A: 70% and Mr. B: 30% profilt sharing). The turnover is of the partnership firm is 6 Lacs. Now whether Mr. A individually or the partnership firm is mandatorily required to register under service tax ??

Regards