According to the text, who launched the investigation?

O texto seguinte servirá de base para responder às questões de 1 a 4.

TAKING THE CRISP Fury as Walkers cuts two bags from multipacks but keeps price the SAME

(1º§) Its variety pack has shrunk from 24 to 22 bags but still costs £3.50.

(2º§) The older version contained six salt and vinegar packs, six cheese and onion, six ready salted and six prawn cocktail.

(3º§) Missing from the 22-size bags are one salt and vinegar and one prawn cocktail.

(4º§) However, other snack makers are also being skimpy, a Sun investigation has found.

(5º§) Multipacks of Smiths' Frazzles and Chipsticks have shrunk from eight to six but remain about £1. And packs of KP's Space Raiders have also gone from eight to six while keeping their £1 price.

(6º§) KP has made each bag 1.2g heavier, but the total multipack is more than 16g down. And £1 Roysters T-bone steak-flavoured bubble chips now come in packs of five rather than six.

(7º§) Experts warned families to watch out for the sneaky and widespread shrinkflation.

(8º§) MoneySavingExpert's Oli Townsend said: "When products get smaller but prices stay the same, shoppers rightly feel short-changed.

(9º§) "If your favourite brand has got smaller but the price hasn't, consider 'downshifting' by dropping one brand level from your usual choice - if you can't tell the difference, stick with the cheaper one."

(10º§) Walkers, Smiths and KP Snacks did not comment.

Acesso em: https://www.thesun.co.uk/news/uknews/ 16317541/walkers-cuts-two-bags-price-same/