Offer or Contract: Kya hai difference?

Maine ye question 3 baar padha aur abhi bhi samajh nahi aaya 😭. CLAT UG me Contract Law ka chapter to padhna hoga. Mere paas do option hain, kya correct hai aur kyun?

Xyz Inc. ka contract hain jo inki website par upload hua hai. Contract ke tareeke se, Xyz Inc. kisi bhi vikretaa ko contract ki condition par vikreta kar sakhta hai. Lekin website par, Xyz Inc. kee notification mein likha hai ki contract ke 30 din baad, vikreta ko apna decision dekhkar contact karna hoga.

Option 1: Is condition se, contract pura offer hai. Option 2: Ye condition, contract ko accept ka right denati hai.

Kya correct hai ?