Based on this news highlight below, what was the primary cause of the$-$strengthening in the value of the Swiss franc?

The CHF strengthened because of higher inflation expectations

OThe CHF strengthened because of lower inflation$-$expectations

OThe CHE strengthened because of higher interest rate expectations

Swiss Franc Hits $2-$Week High Versus Dollar on Hawkish SNB Talk

By Naomi Tajitsu

$($Bloomberg$)--$ The Swiss franc extended gains, hitting a two$-$week high versus the dollar after hawkish comments from Switzerland's central bank stoked expectations for more interest rate hikes.

USD$/$CHF fell $1\mathrm{.}1\%$ to $0\mathrm{.}8998,$ its weakest since May $23$

EUR$/$CHF down $0\mathrm{.}4\%$ at $0\mathrm{.}9695$

Inflation remains high in Switzerland and interest rate increases are necessary to keep it under control, Swiss National Bank President Thomas Jordan says at a conference in the country