How can I root my Lenovo p70-a smart phone?

[AC Question]

i want to root my lenovo p70-a, because its not support sd card data moving independently. its default file browser working but its not good. i want to move files from ex file explorer but its not happening not deleting nor doing anything from ex file explorer due to lock of sd card default by company in android 4.4.4, so please help me. thanks. and i want also pc suite for this smart phone.