Does a contract exists?

Day $1$: Conley sent a fax to Raleigh$$s office: $$we offer to provide you with widget$-$covering service for $$1,000$ per month for six months starting January $1.$

Day $2$: Raleigh sends a letter via U$.$S$.$ mail to Conley: $$I accept your offer on Day $1$

Day$3$: Conley telephones Raleigh and tells him: $$I revoke my widget$-$covering of Day $1.$ Upon hearing this, Raleigh states, $$too late. I already put my acceptance in the mailbox!$$

Day $4$: Conley receives Raleigh $$s letter of acceptance on Thursday.

Group of answer choices

contract was created once Raleigh sent the letter

no contract. Conley still had the power to revoke the offer on Day $3$ because Raleigh used a slower method to accept than Conley used to make the offer.

no contract since Thursday is the new Friday and everyone is out of the office.

contract. Conley did not the power to revoke the offer on Day $3$ because Raleigh used a reasonable method to accept than Conley used to make the offer.