Let p be the proposition "I will do every exercise in this book" and q be the proposition "I will get an "A" in this course." Express each of these as a combination of p and q.
a) I will get an "A" in this course only if I do every exercise in this book.
b) I will get an "A" in this course and I will do every exercise in this book.
c) Either I will not get an "A" in this course or I will not do every exercise in this book.
d) For me to get an "A" in this course it is necessary and sufficient that I do every exercise in this book.