mount.nfs: an incorrect mount option was specified

I did this mount 192.168.38.11:/data/f_data/cloud /data on one machine (centos 7.2) it worked, on the other machine(SL7.0) i did the exact same command I got the following error mount.nfs: an incorrect mount option was specified the man page of nfs between SL and Cent is the same, what's going on?

other commands I tried resulting in the same error:

• mount -t nfs 192.168.38.11:/data /data

• edited fstab with 192.168.38.11:/data /data nfs defaults 0 0then did mount -a

• mount.nfs 192.168.38.11:/data /data

The funny thing is, all of the commands I tried worked on the cent7.2 box. I also did the same command on a SL7.2 box and it worked.

Also /etc/exports of the fileserver is shared among the subnet and both machines is in the subnet.

nfs-utils is installed in the box. yum list installed | grep nfs