So you could just be a general-B and say you do electrical, and throw in D-63 Construction Cleanup.
There is a good chance your doing some cleanup on every job so there are two trades .
There is 5-6 other 'trades' they classify, all that a C10 also does as one trade that general-b could use to say they are doing more than one trade,
C-47 Solar, C-7 low voltage and or class C-45 sign circuits and HVAC whatever that one is.
Stranger still seems like if your a solar contractor C-47 now are you required to switch to a C10 but they acknowledge the general B exemption:
The CSLB ruled that the C-10 license is the only specialty license eligible to install solar and energy storage systems.
www.solarpowerworldonline.com
Thats very odd.