S who lives in Upington, sends P, who lives in Cape Town, a lettter by post in which she offers to sell him her (S's) motorcylce, a collector 's piece, for R100 000. She states in her letter that her offer will expired on 1 February. P accepts S's offer by letter which he posted on 8 January. The postal service is disrupted by a strike which start on 6 January and only ends on 1 February. During this period no post is delivered. S receives the letter only on 7 February and only reads it on the next day . Did a valid contract of sale arise between S and P and, if so, where and when was the contract concluded? Advised P fully. Substantiate your advise and refer to relevant case law. Do not discuss option contracts.