3) Which revision corrects the error in this sentence?
My mother is a wind turbine technician for NRG Globalwise she installs and repairs systems all over the world.
A) My mother, is a wind turbine technician for NRG Globalwise she installs, and repairs systems all over the world.
B) My mother is a wind turbine technician for NRG Globalwise so she installs, and repairs systems all over the world.
My mother is a wind turbine technician for NRG Globalwise so, she installs and repairs systems all over the world.
D) My mother is a wind turbine technician for NRG Globalwise, so she installs and repairs systems all over the world.