  Let $ k, m, n $ be positive integers with $ k \geq 2 $. A $ k $-multiset of $
[n]_m $ is a collection of $ k $ integers from the set $ \{1, 2, \ldots, n\} $
in which the integers can appear more than once but at most $ m $ times. A
family of such $ k $-multisets is called an intersecting family if every pair
of $ k $-multisets from the family have non-empty intersection. A finite
sequence of real numbers $\{a_1,a_2,\ldots,a_n\}$ is said to be unimodal if
there is some $k\in \{1,2,\ldots,n\}$, such that $a_1\leq a_2\leq\ldots\leq
a_{k-1}\leq a_k\geq a_{k+1}\geq \ldots\geq a_n$. Given $m,n,k$, denote
$C_{k,l}$ as the coefficient of $x^k$ in the generating function
$(\sum_{i=1}^mx^i)^l$, where $1\leq l\leq n$. In this paper, we first show that
the sequence of $\{C_{k,1},C_{k,2},\ldots,C_{k,n}\}$ is unimodal. Then we use
this as a tool to prove that the intersecting family in which every $ k
$-multiset contains a fixed element attains the maximum cardinality for $ n
\geq k + \lceil k/m\rceil $. In the special case when $m = 1$ and $m=\infty$,
our result gives rise to the famous Erd\H{o}s-Ko-Rado Theorem and an unbounded
multiset version for this problem given by Meagher and Purdy, respectively. The
main result in this paper can be viewed as a bounded multiset version of the
Erd\H{o}s-Ko-Rado Theorem.
