Why does an aluminum block feel colder to the touch than a paperback book when you pick them up even though both objects are at the same temperature?

a
the aluminum block is a better conductor of heat so it transfers heat away from your skin faster
b
the paperback book is a better conductor of heat so it transfers heat away from your skin faster
c
the aluminum block and the paperback book will feel the same.

a) the aluminum block is a better conductor of heat so it transfers heat away from your skin faster.