In terms of concluding a contract, an SMS may be used to conclude a contract. When is a contract concluded using SMS?

a.
When the SMS was received and read by the other party

b.
When the SMS was received

c.
When the SMS was sent

d.
No contract of employment may be concluded via an eme, only via a computer

e.
None of the above

a. When the SMS was received and read by the other party