Since Coronal Mass Ejections ( CMEs ) are the major drivers of space weather , it is crucial to study their evolution starting from the inner corona .
In this work we use Graduated Cylindrical Shell ( GCS ) model to study the 3D evolution of 59 CMEs in the inner ( < 3R _ { \odot } ) and outer ( > 3R _ { \odot } ) corona using observations from COR-1 and COR-2 on-board Solar TErrestrial RElations Observatory ( STEREO ) spacecraft .
We identify the source regions of these CMEs and classify them as CMEs associated with Active Regions ( ARs ) , Active Prominences ( APs ) , and Prominence Eruptions ( PEs ) .
We find 27 \% of CMEs show true expansion and 31 \% show true deflections as they propagate outwards .
Using 3D kinematic profiles of CMEs , we connect the evolution of true acceleration with the evolution of true width in the inner and outer corona .
Thereby providing the observational evidence for the influence of the Lorentz force on the kinematics to lie in the height range of 2.5 - 3 R _ { \odot } .
We find a broad range in the distribution of peak 3D speeds and accelerations ranging from 396 to 2465 km s ^ { -1 } and 176 to 10922 m s ^ { -2 } respectively with a long tail towards high values coming mainly from CMEs originating from ARs or APs .
Further , we find the magnitude of true acceleration is be inversely correlated to its duration with a power law index of -1.19 .
We believe that these results will provide important inputs for the planning of upcoming space missions which will observe the inner corona and the models that study CME initiation and propagation .