From my understanding, they can't make you decide because there is something about an April 15th decision deadline for students who get an offer before April. They can't rescind your offer until after April 15th if the program begins in the fall.. https://growthzonesitesprod.azureedge.net/wp-content/uploads/sites/1023/2020/01/CAPCSD-April-15-Deadline-Email-January-2020.pdf
And you can always lose your deposit and choose another school if that school is your top choice.