Select the phrase/connector from the given three options which can be used to form a single sentence from the two sentences given below, implying the same as expressed in the statement sentence.
She scored full marks in her exam. Mohini would not be allowed to participate in the annual day. 1. Unless 2. Whereas 3. At least

Options

A. Only 1
B. Only 2
C. Only 3
D. Both 1 and 3