Access Options Volume data

Hello,

I am trying to use the Refinitiv data api to gather information on LCO Options Volume data

I usually get data in Python via the Refinitiv Data API this way:

import refinitiv.data as rd

def print_data(data, instrument, stream): # Callback function

print(data, instrument, stream)

rd.open_session('platform.deployed')

stream = rd.open_pricing_stream(

universe=keys,

fields=fields,

on_data=print_data,

service="hEDD",

)

What keys and fields do I need to use to gather the data in the table? is hEDD the right service?

Many thanks

Lucio