Use ITR-1 or ITR-2 in case of Mutual Fund profit?

In March 2017, my mother sold a long term tax saving mutual fund and earned profit of 55K. Apart from pension and the bank FD  interest that is the only additional income she had. So while filing Income tax Return, which form she should use? Is it ITR-1 or ITR-2? I believe she can use ITR-1 and declare the earned profit on mutual fund as Exempt income under Sec. 10 (38). But please confirm. Thank You.