But with Vodafone chucking massive sums to improve its data and voice capabilities, not to mention embarking on massive acquisitions like those of multi-services providers Kabel Deutschland and Ono , the London firm's revenues performance has received a huge boot in the right direction.
In the context of the input sentence, determine the relationship between 'Vodafone' and 'Ono'.
Options: subsidiary, distributed by, currency, location of formation